WIP: Implement profile validation

src/Validator/Constraints/BankAccount.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+#[\Attribute]
+class BankAccount extends Constraint
+{
+    public string $message = 'Die Bankverbindung ist unvollständig';
+
+    public function __construct(string $message = null, array $groups = null, $payload = null)
+    {
+        parent::__construct([], $groups, $payload);
+
+        $this->message = $message ?? $this->message;
+    }
+
+    public function getTargets(): string
+    {
+        return Constraint::CLASS_CONSTRAINT;
+    }
+}