Add AbstractController, implement flash message handling, and refactor repositories

src/Controller/Admin/AnswerCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\Answer;

src/Controller/Admin/CandidateCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\Candidate;

src/Controller/Admin/CorrectionCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\Correction;

src/Controller/Admin/GivenAnswerCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\GivenAnswer;

src/Controller/Admin/QuestionCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\Question;

src/Controller/Admin/QuizCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\Quiz;

src/Controller/Admin/SeasonCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\Season;

src/Controller/Admin/UserCrudController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Controller\Admin;
 
 use App\Entity\User;