Add MST-based component alignment for GGMP local GMMs

[vt2211]

Adds an MST-based component alignment option to GGMP. This is for the multivariate local GMM portion.

[codecov]

Codecov Report

❌ Patch coverage is 5.37634% with 88 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.69%. Comparing base (503d5d8) to head (6962d1b).

Files with missing lines	Patch %	Lines
fvgp/ggmp.py	5.37%	88 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #34      +/-   ##
==========================================
- Coverage   81.93%   80.69%   -1.25%     
==========================================
  Files          18       18              
  Lines        5609     5702      +93     
==========================================
+ Hits         4596     4601       +5     
- Misses       1013     1101      +88     

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