Log important events into a file

Created by: shoffmeister

solaar does log warnings in case of failure, e.g.

12:25:57,373  WARNING [MainThread] logitech_receiver.diversion: cannot create uinput device: "/dev/uinput" cannot be opened for writing

but these warnings appear to be only visible on the console, on stdout. To see these warnings, (an auto-started) solaar needs to be stopped (pkill solaar) and the launched from the console. This enables users to see future log entries.

It would be nicer to have solaar (also) log important events into the journald log, enabling users to inspect the logs for any solaar events that failed ... looking back.