Add comprehensive installation and setup documentation

- Add GETTING_STARTED.md with quick start guide and development modes
- Add INSTALL.sh automated installation script
- Add INSTALLATION_CHECKLIST.md, INSTALLATION_SUCCESS.md, and INSTALLATION_SUMMARY.md
- Add QUICK_REFERENCE.md for common commands
- Add SETUP_GUIDE.md with detailed setup instructions
- Update README.md with improved project overview
- Add did-wallet app dependencies and node_modules

apps/did-wallet/node_modules/err-code/README.md

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+# err-code
+
+[![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency status][david-dm-image]][david-dm-url] [![Dev Dependency status][david-dm-dev-image]][david-dm-dev-url] [![Greenkeeper badge][greenkeeper-image]][greenkeeper-url]
+
+[npm-url]:https://npmjs.org/package/err-code
+[downloads-image]:http://img.shields.io/npm/dm/err-code.svg
+[npm-image]:http://img.shields.io/npm/v/err-code.svg
+[travis-url]:https://travis-ci.org/IndigoUnited/js-err-code
+[travis-image]:http://img.shields.io/travis/IndigoUnited/js-err-code/master.svg
+[david-dm-url]:https://david-dm.org/IndigoUnited/js-err-code
+[david-dm-image]:https://img.shields.io/david/IndigoUnited/js-err-code.svg
+[david-dm-dev-url]:https://david-dm.org/IndigoUnited/js-err-code?type=dev
+[david-dm-dev-image]:https://img.shields.io/david/dev/IndigoUnited/js-err-code.svg
+[greenkeeper-image]:https://badges.greenkeeper.io/IndigoUnited/js-err-code.svg
+[greenkeeper-url]:https://greenkeeper.io/
+
+Create new error instances with a code and additional properties.
+
+
+## Installation
+
+```console
+$ npm install err-code
+// or
+$ bower install err-code
+```
+
+The browser file is named index.umd.js which supports CommonJS, AMD and globals (errCode).
+
+
+## Why
+
+I find myself doing this repeatedly:
+
+```js
+var err = new Error('My message');
+err.code = 'SOMECODE';
+err.detail = 'Additional information about the error';
+throw err;
+```
+
+
+## Usage
+
+Simple usage.
+
+```js
+var errcode = require('err-code');
+
+// fill error with message + code
+throw errcode(new Error('My message'), 'ESOMECODE');
+// fill error with message + code + props
+throw errcode(new Error('My message'), 'ESOMECODE', { detail: 'Additional information about the error' });
+// fill error with message + props
+throw errcode(new Error('My message'), { detail: 'Additional information about the error' });
+```
+
+## Pre-existing fields
+
+If the passed `Error` already has a `.code` field, or fields specified in the third argument to `errcode` they will be overwritten, unless the fields are read only or otherwise throw during assignment in which case a new object will be created that shares a prototype chain with the original `Error`. The `.stack` and `.message` properties will be carried over from the original error and `.code` or any passed properties will be set on it.
+
+
+## Tests
+
+`$ npm test`
+
+
+## License
+
+Released under the [MIT License](http://www.opensource.org/licenses/mit-license.php).

apps/did-wallet/node_modules/err-code/dist/index.d.ts

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+export = createError;
+/**
+ *
+ * @param {any} err - An Error
+ * @param {string|Extensions} code - A string code or props to set on the error
+ * @param {Extensions} [props] - Props to set on the error
+ * @returns {Error & Extensions}
+ */
+declare function createError(err: any, code: string | Extensions, props?: Extensions | undefined): Error & Extensions;
+declare namespace createError {
+    export { Extensions, Err };
+}
+type Extensions = {
+    [key: string]: any;
+};
+type Err = Error;

apps/did-wallet/node_modules/err-code/index.js

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+'use strict';
+
+/**
+ * @typedef {{ [key: string]: any }} Extensions
+ * @typedef {Error} Err
+ * @property {string} message
+ */
+
+/**
+ *
+ * @param {Error} obj
+ * @param {Extensions} props
+ * @returns {Error & Extensions}
+ */
+function assign(obj, props) {
+    for (const key in props) {
+        Object.defineProperty(obj, key, {
+            value: props[key],
+            enumerable: true,
+            configurable: true,
+        });
+    }
+
+    return obj;
+}
+
+/**
+ *
+ * @param {any} err - An Error
+ * @param {string|Extensions} code - A string code or props to set on the error
+ * @param {Extensions} [props] - Props to set on the error
+ * @returns {Error & Extensions}
+ */
+function createError(err, code, props) {
+    if (!err || typeof err === 'string') {
+        throw new TypeError('Please pass an Error to err-code');
+    }
+
+    if (!props) {
+        props = {};
+    }
+
+    if (typeof code === 'object') {
+        props = code;
+        code = '';
+    }
+
+    if (code) {
+        props.code = code;
+    }
+
+    try {
+        return assign(err, props);
+    } catch (_) {
+        props.message = err.message;
+        props.stack = err.stack;
+
+        const ErrClass = function () {};
+
+        ErrClass.prototype = Object.create(Object.getPrototypeOf(err));
+
+        // @ts-ignore
+        const output = assign(new ErrClass(), props);
+
+        return output;
+    }
+}
+
+module.exports = createError;

apps/did-wallet/node_modules/err-code/index.umd.js

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+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.errCode = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
+'use strict';
+
+/**
+ * @typedef {{ [key: string]: any }} Extensions
+ * @typedef {Error} Err
+ * @property {string} message
+ */
+
+/**
+ *
+ * @param {Error} obj
+ * @param {Extensions} props
+ * @returns {Error & Extensions}
+ */
+function assign(obj, props) {
+    for (const key in props) {
+        Object.defineProperty(obj, key, {
+            value: props[key],
+            enumerable: true,
+            configurable: true,
+        });
+    }
+
+    return obj;
+}
+
+/**
+ *
+ * @param {any} err - An Error
+ * @param {string|Extensions} code - A string code or props to set on the error
+ * @param {Extensions} [props] - Props to set on the error
+ * @returns {Error & Extensions}
+ */
+function createError(err, code, props) {
+    if (!err || typeof err === 'string') {
+        throw new TypeError('Please pass an Error to err-code');
+    }
+
+    if (!props) {
+        props = {};
+    }
+
+    if (typeof code === 'object') {
+        props = code;
+        code = '';
+    }
+
+    if (code) {
+        props.code = code;
+    }
+
+    try {
+        return assign(err, props);
+    } catch (_) {
+        props.message = err.message;
+        props.stack = err.stack;
+
+        const ErrClass = function () {};
+
+        ErrClass.prototype = Object.create(Object.getPrototypeOf(err));
+
+        // @ts-ignore
+        const output = assign(new ErrClass(), props);
+
+        return output;
+    }
+}
+
+module.exports = createError;
+
+},{}]},{},[1])(1)
+});

apps/did-wallet/node_modules/err-code/package.json

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+{
+  "name": "err-code",
+  "version": "3.0.1",
+  "description": "Create an error with a code",
+  "main": "index.js",
+  "types": "dist/index.d.ts",
+  "scripts": {
+    "lint": "eslint '{./*.js,test/**/*.js}'",
+    "check": "tsc --noEmit",
+    "prepare": "tsc --emitDeclarationOnly --declarationDir dist",
+    "test": "mocha --bail",
+    "prepublishOnly": "browserify -s err-code index.js > index.umd.js"
+  },
+  "bugs": {
+    "url": "https://github.com/IndigoUnited/js-err-code/issues/"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/IndigoUnited/js-err-code.git"
+  },
+  "keywords": [
+    "error",
+    "err",
+    "code",
+    "properties",
+    "property"
+  ],
+  "author": "IndigoUnited <hello@indigounited.com> (http://indigounited.com)",
+  "license": "MIT",
+  "devDependencies": {
+    "@satazor/eslint-config": "^3.0.0",
+    "@types/expect.js": "0.3.29",
+    "@types/mocha": "8.2.0",
+    "browserify": "^17.0.0",
+    "eslint": "^7.19.0",
+    "expect.js": "^0.3.1",
+    "mocha": "^8.2.1",
+    "typescript": "^4.1.3"
+  },
+  "files": [
+    "index.js",
+    "index.umd.js",
+    "dist/index.d.ts"
+  ]
+}