Maybe this will move to the Community Hass.io Add-ons, but for now it's here.
Adding this add-ons repository to your Hass.io Home Assistant instance is pretty easy. Follow the official instructions on the website of Home Assistant, and use the following URL:
https://github.com/ycardon/hassio-addonsThis Addon is not maintained anymore, you can use https://github.com/dynasticorpheus/gigasetelements-ha as a replacement.
A simple web and MQTT bridge to gigaset-elements APIs