Add method to unpin chat messages

src/TgBotLib/Methods/UnpinChatMessage.php

@@ -0,0 +1,40 @@
+<?php
+
+    namespace TgBotLib\Methods;
+
+    use TgBotLib\Abstracts\Method;
+    use TgBotLib\Bot;
+    use TgBotLib\Enums\Methods;
+
+    class UnpinChatMessage extends Method
+    {
+
+        /**
+         * @inheritDoc
+         */
+        public static function execute(Bot $bot, array $parameters = []): bool
+        {
+            return (bool)self::executeCurl(self::buildPost($bot, Methods::UNPIN_CHAT_MESSAGE->value, $parameters));
+        }
+
+        /**
+         * @inheritDoc
+         */
+        public static function getRequiredParameters(): ?array
+        {
+            return [
+                'chat_id'
+            ];
+        }
+
+        /**
+         * @inheritDoc
+         */
+        public static function getOptionalParameters(): ?array
+        {
+            return [
+                'business_connection_id',
+                'message_id'
+            ];
+        }
+    }