feat(core) : move user entity into core module and repoint security/doctrine (temp legacy alias)

src/Module/Core/Domain/Entity/User.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace App\Entity;
+namespace App\Module\Core\Domain\Entity;
 
 use ApiPlatform\Metadata\ApiProperty;
 use ApiPlatform\Metadata\ApiResource;

src/Module/Core/_compat_user_alias.php

@@ -0,0 +1,8 @@
+<?php
+
+declare(strict_types=1);
+use App\Entity\User;
+
+if (!class_exists(User::class, false)) {
+    class_alias(App\Module\Core\Domain\Entity\User::class, User::class);
+}