Add flush for queue flushing
Add set/get level for handler
Allow adding handlers during launch, handlers cannot be added afterwards at the moment
Add testing for LoggingLevel enum
in the QueueLister launcher add "respect_handler_level=True" so it respects the previous set log levels per handler
Also split all logging tests into their own file
enables Queues if multiprocessing.Queue() is set in the "log_queue" setting
Now a logger "Log.init_worker_logging" can be attached to the ProcessPoolExecutor,
the init args must be the log_queue set
example:
```py
with concurrent.futures.ProcessPoolExecutor(
max_workers=max_forks,
initializer=Log.init_worker_logging,
initargs=(log_queue,)
) as executor:
````
Move all settings into a settings argument, the structure is defined in LogSettings.
Default settings are in Log.DEFAULT_LOG_SETTINGS
Only log path and log name are parameters
Color output for console is on default enabled, disable via "console_color_output_enabled"
The complete console output can be stopped with "console_enabled"
