refactor: move backend in apps/backend

apps/backend/database/seeders/DatabaseSeeder.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace apps\backend\database\seeders;
+
+use apps\backend\database\seeders\DevSeeder;
+use apps\backend\database\seeders\ProdSeeder;
+use Illuminate\Database\Seeder;
+use function Database\Seeders\config;
+
+class DatabaseSeeder extends Seeder
+{
+    public function run()
+    {
+        if (config('app.dev') == 1) {
+            $this->call(DevSeeder::class);
+        } else {
+            $this->call(ProdSeeder::class);
+        }
+    }
+}
+