Add SetChatAdministratorCustomTitle method

src/TgBotLib/Methods/SetChatAdministratorCustomTitle.php

@@ -0,0 +1,39 @@
+<?php
+
+    namespace TgBotLib\Methods;
+
+    use TgBotLib\Abstracts\Method;
+    use TgBotLib\Bot;
+    use TgBotLib\Enums\Methods;
+
+    class SetChatAdministratorCustomTitle extends Method
+    {
+
+        /**
+         * @inheritDoc
+         */
+        public static function execute(Bot $bot, array $parameters = []): true
+        {
+            return (bool)$bot->sendRequest(Methods::SET_CHAT_ADMINISTRATOR_CUSTOM_TITLE->value, $parameters);
+        }
+
+        /**
+         * @inheritDoc
+         */
+        public static function getRequiredParameters(): ?array
+        {
+            return [
+                'chat_id',
+                'user_id',
+                'custom_title'
+            ];
+        }
+
+        /**
+         * @inheritDoc
+         */
+        public static function getOptionalParameters(): ?array
+        {
+            return null;
+        }
+    }