Lint PHP code psr-12, add GH action

tests/TestCase.php

@@ -2,14 +2,12 @@
 
 namespace Tests;
 
-use App\Models\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Foundation\Testing\TestCase as BaseTestCase;
-use Illuminate\Support\Str;
 
 abstract class TestCase extends BaseTestCase
 {
-    use RefreshDatabase;
     use CreatesApplication;
+    use RefreshDatabase;
     use TestHelpers;
 }