Add ChatBoostEvent class

src/TgBotLib/Events/ChatBoostEvent.php

@@ -0,0 +1,23 @@
+<?php
+
+    namespace TgBotLib\Events;
+
+    use TgBotLib\Abstracts\UpdateEvent;
+    use TgBotLib\Enums\EventType;
+    use TgBotLib\Objects\ChatBoostUpdated;
+
+    abstract class ChatBoostEvent extends UpdateEvent
+    {
+        /**
+         * @inheritDoc
+         */
+        public static function getEventType(): EventType
+        {
+            return EventType::CHAT_BOOST_EVENT;
+        }
+
+        protected function getChatBoost(): ChatBoostUpdated
+        {
+            return $this->update->getChatBoost();
+        }
+    }