Limit BASIL --slicedt argument to ascending slice orders

[tsalo]

Closes #347.

Changes proposed in this pull request

• Only use the --slicedt argument in BASIL calls when the slice order is ascending.
  • I wonder if this could still be missing some cases (e.g., slice encoding direction that isn't k).
• Add plds as an output to the ComputeCBF interface. This will only be written out when the PLDs are slice-timing corrected.

[tsalo]

I need to check that the PLD shift is correctly applied to NKI data.

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (3a34405) 62.77% compared to head (ed0a535) 62.80%.

Files	Patch %	Lines
aslprep/workflows/asl/cbf.py	71.42%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #348      +/-   ##
==========================================
+ Coverage   62.77%   62.80%   +0.02%     
==========================================
  Files          56       56              
  Lines        5177     5186       +9     
  Branches      721      722       +1     
==========================================
+ Hits         3250     3257       +7     
- Misses       1675     1676       +1     
- Partials      252      253       +1     

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

[tsalo]

I was able to successfully run this branch on NKI data, so I'm going to merge.