ILCI CACCIA Method Requests

[btmonier]

This PR adds 3 primary features/fixes:

• Fixed typo in plotPCA() error message
• Add new function filterGenotypeTableBySiteName():
  • Filters genotype tables using literal marker names/IDs
• Add new function mergeGenotypeTables():
  • Merges multiple genotype tables by site values

[codecov]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (42ceeb1) 95.69% compared to head (9d01897) 95.51%.

❗ Current head 9d01897 differs from pull request most recent head ceffee7. Consider uploading reports for the commit ceffee7 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #12      +/-   ##
==========================================
- Coverage   95.69%   95.51%   -0.18%     
==========================================
  Files          31       31              
  Lines        1883     1919      +36     
==========================================
+ Hits         1802     1833      +31     
- Misses         81       86       +5     

Files	Coverage Δ
R/join_methods.R	100.00% <100.00%> (ø)
R/filter_functions.R	91.09% <91.09%> (-0.25%)	⬇️

... and 2 files with indirect coverage changes

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