Refactor Filament resources and models; add attribute casting in Group model, update navigation icons, and remove TeacherSeeder in favor of UserTableSeeder.

database/seeders/DatabaseSeeder.php

@@ -11,9 +11,9 @@ class DatabaseSeeder extends Seeder
      */
     public function run(): void
     {
-        // User::factory(10)->create();
         $this->call([
-            TeacherSeeder::class,
+            UserTableSeeder::class,
+            TeacherTableSeeder::class,
         ]);
     }
 }