Draft: ICSHWI-8691 Generate consoles.cf from files in conserver/

Just copy your .cf files to procs_cf_path and notify the handler register consoles

It wasn't easy... it took me a couple of iterations to get it right: the task that creates consoles.cf and reloads conserver needs to be in a separate yaml file because it needs to be called from a handler too.

Introduced register consoles handler that can be notified after a .cf file was copied to procs_cf_path

Just marked it as "draft" because we might want to try and merge the to-upstream with "no dummy console" first to make reviewing easier.