ENH: Add volspace and volcohort entities to IO config file

[tsalo]

Closes none, but relates to #883, bids-standard/bids-specification#1900, and nipreps/fmriprep#3341.

Changes proposed:

• Add volspace and volcohort entities to the IO config file.
• Allow volspace, volcohort, and resolution in CIFTI filenames.

[tsalo]

@effigies @mgxd would you mind taking a look at this at some point?

[mgxd]

LGTM

[mgxd]

never noticed this until now, but why are these 0 padded?

[effigies]

I believe an earlier version of pybids had something like that for run, so it parsed int("1") instead of int("01"). I don't think it was necessary or that it is still there.

[tsalo]

An alternative proposed by @effigies in bids-standard/bids-specification#1900 involves using + in the space entity instead of a new entity, so that's a viable alternative.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.45%. Comparing base (1f9a0cf) to head (5ee5f1d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #891   +/-   ##
=======================================
  Coverage   71.45%   71.45%           
=======================================
  Files          87       87           
  Lines        8400     8400           
  Branches      990      990           
=======================================
  Hits         6002     6002           
  Misses       2390     2390           
  Partials        8        8           

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[tsalo]

I'm committing to just using +s, so I'm going to close this.