ss/timing rt update

[ssiegelx]

Adds a new timing acquisition, which contains the timing correction generated by the real-time pipeline.

[ketiltrout]

There are a few fiddly things missing here, some of which will become apparent when you do the alpenhorn additions, but other bits are for Finder support:

• in class ArchiveAcq in orm.py, you need to:
  • add a new function timing_files that returns self.files.join(TimingFileInfo)
  • add this timing_files function to the methods timed_files and n_timed_files
• for util.py:
  • in populate_types, in addition to the AcqType entry you added, you also need to add an entry to the FileType initialiser following
  • create a parse_timingfile_name (which you'll need to use in your alpenhorn additions), which at minimum raises db.ValidationError if the filename isn't correct.
  • add detection logic to detect_file_type so that it will return the correct FileType given the name of a TimingFile.

[ketiltrout]

There's a deficiency in detect_file_type which I think you're going to run in to: each FileType needs a unique regex for its filenames. This is why we had to add hfb_ to the absorber file names.

It's not ideal. One way to fix it would be to add the acq_type to the call, which has already been determined by the time this function is called by alpenhorn, and which could be used to resolve ambiguities with identical regexes.