add github links for mqtt web and telegram stuff

input/projects/smarthome/mqtt_telegram.md

 parent: smarthome
 position: 500
 git: https://git.xythobuz.de/thomas/lights-telegram
+github: https://github.com/xythobuz/mqtt-lights-telegram
 date: 2022-08-23
 comments: true
 ---

input/projects/smarthome/mqtt_web.md

 parent: smarthome
 position: 400
 git: https://git.xythobuz.de/thomas/lights-web
+github: https://github.com/xythobuz/mqtt-lights-web
 date: 2022-08-14
 comments: true
 ---