telegram-chat: support trusted group chat ids

But be warned: Adding a person to a trusted group will give
her/him administrative control over the device(s) - without
changes on the device itself!

On the other hand... Removing permissions is easily done by removing
a person from a group.

Closes: https://github.com/eworm-de/routeros-scripts/issues/101

telegram-chat.rsc

@@ -107,7 +107,9 @@
       :local ThreadId [ $IfThenElse ($Message->"is_topic_message") ($Message->"message_thread_id") "" ];
 
       :foreach IdsTrusted in=($TelegramChatId, $TelegramChatIdsTrusted) do={
-        :if ($From->"id" = $IdsTrusted || $From->"username" = $IdsTrusted) do={
+        :if ($From->"id" = $IdsTrusted || \
+             $From->"username" = $IdsTrusted || \
+             $Chat->"id" = $IdsTrusted) do={
           :set Trusted true;
         }
       }