🔥 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

database/seeders/DatabaseSeeder.php

@@ -3,21 +3,26 @@
 namespace Database\Seeders;
 
 use App\Models\User;
-// use Illuminate\Database\Console\Seeds\WithoutModelEvents;
 use Illuminate\Database\Seeder;
 
 class DatabaseSeeder extends Seeder
 {
-    /**
-     * Seed the application's database.
-     */
     public function run(): void
     {
-        // User::factory(10)->create();
+        User::query()->updateOrCreate(
+            ['email' => 'test@example.com'],
+            ['name' => 'Test User', 'password' => bcrypt('password')]
+        );
 
-        User::factory()->create([
-            'name' => 'Test User',
-            'email' => 'test@example.com',
+        $this->call([
+            PlebSeeder::class,
+            ProjectProposalSeeder::class,
+            ElectionSeeder::class,
+            NostrSeeder::class,
+            MeetupSeeder::class,
+            CourseSeeder::class,
+            NotificationSeeder::class,
+            SecuritySeeder::class,
         ]);
     }
 }