Add DSIQ5 extrapolation option

[tsalo]

Closes #211.

Changes proposed in this pull request

• Allow HCP, ABCD, or DSIQ5 as extrapolation schemes.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 48.75%. Comparing base (4f7dbde) to head (f4aa290).

Files with missing lines	Patch %	Lines
qsirecon/interfaces/dipy.py	33.33%	2 Missing ⚠️
qsirecon/workflows/recon/dipy.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #214   +/-   ##
=======================================
  Coverage   48.75%   48.75%           
=======================================
  Files          56       56           
  Lines        7423     7423           
  Branches     1015     1015           
=======================================
  Hits         3619     3619           
  Misses       3586     3586           
  Partials      218      218           

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[mattcieslak]

Thanks again!