Add official recon spec for ss3t FOD autotrack

[mattcieslak]

Building on #194 this adds an actual workflow for using mrtrix CSD FODs for autotrack.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 53.27103% with 50 lines in your changes missing coverage. Please review.

Project coverage is 48.68%. Comparing base (f95211a) to head (cbdbc73).

Files with missing lines	Patch %	Lines
qsirecon/interfaces/converters.py	27.77%	39 Missing ⚠️
qsirecon/interfaces/dsi_studio.py	22.22%	7 Missing ⚠️
qsirecon/workflows/recon/build_workflow.py	90.00%	0 Missing and 2 partials ⚠️
qsirecon/workflows/recon/converters.py	85.71%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #196      +/-   ##
==========================================
+ Coverage   48.57%   48.68%   +0.11%     
==========================================
  Files          56       56              
  Lines        7309     7405      +96     
  Branches      999     1013      +14     
==========================================
+ Hits         3550     3605      +55     
- Misses       3543     3583      +40     
- Partials      216      217       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[tsalo]

I have a couple of recommendations for formatting and documentation, but I didn't see anything problematic in the code.