* Ava: Move Ava logging to Logger.Debug
Since #4231 we currently redirect Avalonia logs to our Logger, which is pretty nice. But since it uses our Logging level too, it now leads to a massive flood in our Log files.
To avoid that, I've included all `AvaLogLevel` to the log message, and make all Ava Logs using `Logger.Debug`.
* Logs errors to Error and other to Debug
* missing level
* keep var
70638340b3