add log file and copy of paramter to output directory

[tobiasko]

Is your feature request related to a problem? Please describe.

Currently oktoberfest is not writing any log files to disc.

Describe the solution you would like

I think it would be helpful if a log file is written to the output directory, together with a copy of the parameter file, so it becomes easier to understand how the data was generate and how to reproduce it.

[picciama]

agreed. Will add an additional filehandler to the top level logger.

[tobiasko]

👍