Draft fit workflow

[tsalo]

Closes none.

Changes proposed in this pull request

• Draft a workflow based on fMRIPrep's init_bold_fit_wf to determine if the workflow should use raw BOLD + transforms or preprocessed BOLD.

[codecov]

Codecov Report

❌ Patch coverage is 13.46154% with 90 lines in your changes missing coverage. Please review.
✅ Project coverage is 25.44%. Comparing base (4ee535e) to head (59c3f64).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
src/fmripost_template/workflows/fit.py	13.46%	90 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #26      +/-   ##
==========================================
- Coverage   26.36%   25.44%   -0.92%     
==========================================
  Files          19       20       +1     
  Lines        1358     1462     +104     
  Branches      202      215      +13     
==========================================
+ Hits          358      372      +14     
- Misses        990     1080      +90     
  Partials       10       10              

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