Adds a first version of the wiki documentation

Contains:

• CLI user doc
• Assignment creation tutorial
• How to perform exercise tutorial

NodeApp/src/app.ts

 // Read from the .env file
 // ATTENTION : This lines MUST be the first of this file (except for the path import)
 const path = require('node:path');
-require('dotenv').config({ path: path.join(__dirname, '../.env') });
+require('dotenv').config({
+                             path      : path.join(__dirname, '../.env.vault'),
+                             DOTENV_KEY: 'dotenv://:key_fc323d8e0a02349342f1c6a119bb38495958ce3a43a87d19a3f674b7e2896dcb@dotenv.local/vault/.env.vault?environment=development'
+                         });
 require('./shared/helpers/TypeScriptExtensions'); // ATTENTION : This line MUST be the second of this file