Add StoredObjectVoterInterface

An interface is defined that can be implemented by each context-specific voter in the future.

src/Bundle/ChillDocStoreBundle/Security/Authorization/StoredObjectVoterInterface.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace ChillDocStoreBundle\Security\Authorization;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+
+interface StoredObjectVoterInterface {
+
+    public function supports(string $attribute, $subject): bool;
+
+    public function voteOnAttribute(string $attribute, $subject, TokenInterface $token): bool;
+
+}