Add Official Unraid Community App

[kophi]

Please consider adding dawarich as an official community app to Unraid.

The instructions on how to publish the docker-compose file within Unraid is described here: https://forums.unraid.net/topic/57181-docker-faq/#comment-566084. Policy and notes can be found here: https://forums.unraid.net/topic/87144-ca-application-policies-notes/

While there already is an Unraid app for dawarich it is based on a 3rd party container and repo at https://hub.docker.com/r/freikin/dawarich. I would much prefer an official release from this project itself.

Just as a reminder we've already talked about this in the Github Discussions: #150

Thank you for your outstanding work! 🔥