Add support for ShippingQuery events

src/TgBotLib/Events/ShippingQueryEvent.php

@@ -0,0 +1,30 @@
+<?php
+
+    namespace TgBotLib\Events;
+
+    use TgBotLib\Abstracts\UpdateEvent;
+    use TgBotLib\Bot;
+    use TgBotLib\Enums\Types\EventType;
+    use TgBotLib\Enums\UpdateEventType;
+    use TgBotLib\Objects\Payments\ShippingQuery;
+
+    abstract class ShippingQueryEvent extends UpdateEvent
+    {
+        /**
+         * @inheritDoc
+         */
+        public static function getEventType(): UpdateEventType
+        {
+            return UpdateEventType::SHIPPING_QUERY;
+        }
+
+        /**
+         * New incoming shipping query. Only for invoices with flexible price
+         *
+         * @return ShippingQuery
+         */
+        protected function getShippingQuery(): ShippingQuery
+        {
+            return $this->update->getShippingQuery();
+        }
+    }