Fix parseInGenoSep

[nevrome]

Ui - parseInGenoSep has two bugs (I think): It removes needed file extensions (#321) and it reads PLINK data as GenotypeEigenstrat.

This is not a testament to good quality control... I really think we made a mistake with the way we set up our golden tests without the actual optparse-applicative interface.

Please check thoroughly to make sure we get it right now!

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 60.29%. Comparing base (682f6ba) to head (f7a139c).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Poseidon/CLI/OptparseApplicativeParsers.hs	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #322      +/-   ##
==========================================
+ Coverage   59.99%   60.29%   +0.30%     
==========================================
  Files          29       29              
  Lines        4179     4181       +2     
  Branches      481      491      +10     
==========================================
+ Hits         2507     2521      +14     
+ Misses       1191     1169      -22     
- Partials      481      491      +10     

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[stschiff]

Oh drat. OK, thanks for fixing. Looks all good! Do you want to merge this maybe into the gzip-writing branch? Then we save one version update? Or merge immediately and update the Version?