TEST: Add sloppy MSM configuration for use in debugging/CI

[effigies]

MSM is taking ~30min to run on fMRIPrep CI. This adds a sloppy configuration that will hopefully reduce that dramatically.

[codecov]

Codecov Report

Patch coverage: 40.00% and project coverage change: -11.12% ⚠️

Comparison is base (37ad1c6) 54.65% compared to head (4e6fdd3) 43.54%.

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #366       +/-   ##
===========================================
- Coverage   54.65%   43.54%   -11.12%     
===========================================
  Files          23       23               
  Lines        1588     1589        +1     
  Branches      212      208        -4     
===========================================
- Hits          868      692      -176     
- Misses        664      842      +178     
+ Partials       56       55        -1     

Flag	Coverage Δ
ds005	?
ds054	43.54% <40.00%> (-0.03%)	⬇️

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Files Changed	Coverage Δ
smriprep/workflows/anatomical.py	45.56% <0.00%> (ø)
smriprep/workflows/surfaces.py	11.51% <50.00%> (-0.07%)	⬇️

... and 10 files with indirect coverage changes

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[effigies]

230906-17:55:17,627 nipype.workflow INFO:
         [Node] Finished "_msmsulc1", elapsed time 164.174763s.
230906-17:55:49,585 nipype.workflow INFO:
         [Node] Finished "_msmsulc0", elapsed time 196.20051s.

[mgxd]

sweet!