Add ChatMemberUpdatedEvent handling

src/TgBotLib/Events/ChatMemberUpdatedEvent.php

@@ -0,0 +1,29 @@
+<?php
+
+    namespace TgBotLib\Events;
+
+    use TgBotLib\Abstracts\UpdateEvent;
+    use TgBotLib\Bot;
+    use TgBotLib\Enums\EventType;
+    use TgBotLib\Objects\ChatMemberUpdated;
+
+    abstract class ChatMemberUpdatedEvent extends UpdateEvent
+    {
+        /**
+         * @inheritDoc
+         */
+        public static function getEventType(): EventType
+        {
+            return EventType::CHAT_MEMBER_UPDATED;
+        }
+
+        /**
+         * Retrieves the updated chat member information from the update object.
+         *
+         * @return ChatMemberUpdated The updated chat member instance.
+         */
+        protected function getChatMemberUpdated(): ChatMemberUpdated
+        {
+            return $this->update->getChatMember();
+        }
+    }