🔥 Add initial database migrations, seeders, and factories

🎨 Refactor `Lecturer` model to include new fields and factory usage
🔧 Update `DatabaseSeeder` to handle default seeds
🛠️ Enhance `einundzwanzig` database configuration for SQLite compatibility

.ai/mcp/mcp.json

@@ -1,11 +1,11 @@
 {
   "mcpServers": {
     "laravel-boost": {
-      "command": "php",
+      "command": "/usr/bin/php",
       "args": [
-        "artisan",
+        "/var/home/user/Code/einundzwanzig-verein/artisan",
         "boost:mcp"
       ]
     }
   }
-}
+}