Trimming tree

[smasongarrison]

This pull request introduces new functionality for identifying and trimming "leaf" nodes from pedigree datasets. The main additions are the findLeaves and trimPedigree functions, which allow users to systematically detect and remove individuals who do not substantially affect the structure of the pedigree tree. Comprehensive documentation for both functions has also been added.

New pedigree leaf detection and trimming functionality:

• Added findLeaves function to identify "leaf" nodes in a pedigree, with flexible options for which types of leaves to include and the ability to protect individuals based on phenotype data. (R/trimPedigree.R, NAMESPACE, man/findLeaves.Rd) [1] [2] [3]
• Added trimPedigree function to iteratively remove leaf nodes from a pedigree, supporting user-specified removals, phenotype-based protection, and stopping conditions such as minimum pedigree size and maximum iterations. (R/trimPedigree.R, NAMESPACE, man/trimPedigree.Rd) [1] [2] [3]

Documentation:

• Generated roxygen2 documentation for both findLeaves and trimPedigree, including usage, argument details, return values, and examples. (man/findLeaves.Rd, man/trimPedigree.Rd) [1] [2]

[codecov]

Codecov Report

❌ Patch coverage is 97.22222% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.65%. Comparing base (8a7ce30) to head (9844020).
⚠️ Report is 1 commits behind head on dev_main.

Files with missing lines	Patch %	Lines
R/trimPedigree.R	97.22%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           dev_main     #140      +/-   ##
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+ Coverage     84.47%   84.65%   +0.18%     
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  Files            30       31       +1     
  Lines          4973     5045      +72     
============================================
+ Hits           4201     4271      +70     
- Misses          772      774       +2     

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