Move the implementation into the "src" folder and static files into "assets"

The main entry point is now src/index.js when included in other packages.

packages/auth/i18next-scanner.config.js

 module.exports = {
     input: [
-        '*.js',
+        'src/*.js',
     ],
     output: './',
     options: {
         debug: false,
         removeUnusedKeys: true,
-        sort: true,
         lngs: ['en','de'],
+        resource: {
+            loadPath: 'src/i18n/{{lng}}/{{ns}}.json',
+            savePath: 'src/i18n/{{lng}}/{{ns}}.json'
+        },
     },
 }

packages/auth/package.json

 {
   "name": "vpu-auth",
   "version": "1.0.0",
+  "main": "src/index.js",
   "devDependencies": {
     "node-sass": "^4.12.0",
     "rollup": "^1.11.3",

packages/auth/rollup.config.js

@@ -11,7 +11,7 @@ const build = (typeof process.env.BUILD !== 'undefined') ? process.env.BUILD : '
 console.log("build: " + build);
 
 export default {
-    input: 'demo.js',
+    input: 'src/demo.js',
     output: {
         file: 'dist/bundle.js',
         format: 'esm'
@@ -31,8 +31,8 @@ export default {
         (build !== 'local') ? terser() : false,
         copy({
             targets: [
-                'index.html',
-                'favicon.ico',
+                'assets/index.html',
+                'assets/favicon.ico',
                 'node_modules/@webcomponents/webcomponentsjs/webcomponents-loader.js',
                 'node_modules/@webcomponents/webcomponentsjs/bundles',
             ],

packages/auth/demo.js → packages/auth/src/demo.js

-import './index';
 import './vpu-auth-demo';

packages/auth/vpu-auth-demo.js → packages/auth/src/vpu-auth-demo.js

 import utils from './utils.js';
 import {i18n} from './i18n.js';
 import {html, LitElement} from 'lit-element';
+import './vpu-auth';
 
 class AuthDemo extends LitElement {
     constructor() {