Revised CbmDevEventSink. Remove histogramming and timeslice buffering.

This is a revision of CbmDevEventSink, substantially thinning the code and stripping down to the basic functionality:

• Remove histogram handling. The device does not actually fill any histograms, nor does it run an algorithm.
• Remove timeslice buffering and creation of dummy timeslice data. Previously, timeslice data (metadata and event array) were buffered if timeslices do not arrive in sequential index order. This is a questionable concept, since a. it relies on missing timeslices being reported through a different channel (if not, there will be no output in the file after the first gap), and b. real timeslices will be large (several GB), and will be so also after event building (if not a very selective trigger is applied).

In addition, some code cleanup was applied.

requested review from @d.smith

assigned to @p.-a.loizeau

Dear @f.uhlig, @v.friese, @p.-a.loizeau,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

added CodeOwners label

@v.friese I reviewed the code and it looks good to me. I was also able to run it on my machine, and it produced sensible output.

Regarding histogram production and "missed timeslice" handling: There are probably some requirements from the beam time crew concerning both of these topics, but this should be discussed/addressed elsewhere (with @p.-a.loizeau and others). The present MR seems to offer the minimal working example.

resolved all threads

resolved all threads

Sorry, I missed the fact that it was assigned to me previously (only looked at the diffs and comments).

As it is approved by Dominik, can I merge it as is?

added 4 commits

• 63e7b9bb...19ab4b46 - 3 commits from branch computing:master
• 6b34bd16 - Revised CbmDevEventSink. Remove histogramming and timeslice buffering.

Compare with previous version

@p.-a.loizeau Can you merge this? I would like to base my next work on this.

added 5 commits

• 6b34bd16...803ed31c - 4 commits from branch computing:master
• 26080ec4 - Revised CbmDevEventSink. Remove histogramming and timeslice buffering.

Compare with previous version

enabled an automatic merge when the pipeline for 26080ec4 succeeds

merged