feat(contract): add PropertyChangeApplier interface to define change application behavior

- Introduce `PropertyChangeApplier` interface to define the contract for applying processed changes to entities
- Ensure consistent behavior for classes that modify entity properties, starting with `AttributeHandler`

Author: walmir-silva

src/Contract/PropertyChangeApplier.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\PropertyInspector\Contract;
+
+/**
+ * Interface PropertyChangeApplier.
+ *
+ * Defines the contract for classes that apply changes to an object.
+ */
+interface PropertyChangeApplier
+{
+    /**
+     * Applies the processed changes to the given object.
+     *
+     * @param object $object The object to which the changes will be applied
+     */
+    public function applyChanges(object $object): void;
+}