restrucuture_for_cloud (#4)

- update multicast_server
- modify config models
- add dockerfile and docker compose

Reviewed-on: https://gitea.pstruebi.xyz/auracaster/bumble-auracast/pulls/4

.gitignore

@@ -4,6 +4,7 @@ coverage/   # Coverage results after running tests with coverage tools
 .dist-info/  # Wheel metadata (use poetry build to handle this)
 *.egg-info/  # Egg info directory (automatically created by pip)
 auracast.egg-info/
+/build
 
 # Ignore these file types and extensions
 *.pyc     # Compiled Python files (.pyc, .pyo are automatically ignored by git)