added telegram alert

lgsm/config-default/config-lgsm/squadserver/_default.cfg

@@ -33,6 +33,14 @@ pushbulletalert="off"
 pushbullettoken="accesstoken"
 channeltag=""
 
+# Telegram Bot Alerts
+# Get an Bot API key from @botfather
+# The chat id is the User or channel name or an integer like so:
+#   https://stackoverflow.com/questions/32423837/telegram-bot-how-to-get-a-group-chat-id/38388851#38388851
+telegramalert="off"
+telegramapikey=""
+telegramchatid=""
+
 ## Updating | https://github.com/GameServerManagers/LinuxGSM/wiki/Update
 updateonstart="off"