docs: Complete XML documentation comments for sorting and numeric alg…

[xingarr]

Description

This PR addresses incomplete XML documentation comments (marked with "TODO") across multiple algorithm implementations. Proper documentation is essential for code maintainability and helps developers understand the purpose and usage of each class and method.

Changes Made

Fixed incomplete XML documentation in the following files:

Sorting Algorithms

• BogoSorter.cs: Added complete documentation for the Sort method including time complexity analysis (O((n+1)!) average, unbounded worst-case) and algorithm characteristics
• ShellSorter.cs: Added proper class-level documentation describing the Shell sort algorithm
• BinaryInsertionSorter.cs: Completed class documentation and fixed the comparer parameter description in the BinarySearch method

Numeric Algorithms

• EuclideanGreatestCommonDivisorFinder.cs: Added descriptive class documentation and clarified parameter descriptions for the FindGcd method
• NaiveKnapsackSolver.cs: Completed comprehensive documentation for the Solve method, including detailed parameter and return value descriptions

Motivation

• Improves code documentation quality and maintainability
• Follows the project's XML documentation standards outlined in CONTRIBUTING.md
• Makes the codebase more accessible to new contributors and users
• Removes all "TODO" placeholders in documentation comments

Type of Change

• Documentation update
• Code quality improvement

Testing

• No functional changes were made to the code
• All existing tests should continue to pass
• Documentation changes do not affect runtime behavior

Checklist

• XML documentation follows C# documentation standards
• All TODO comments have been replaced with meaningful descriptions
• Documentation includes algorithm complexity analysis where applicable
• Parameter and return value descriptions are clear and accurate

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.82%. Comparing base (cf79871) to head (df68c93).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #553   +/-   ##
=======================================
  Coverage   96.82%   96.82%           
=======================================
  Files         286      286           
  Lines       11753    11753           
  Branches     1687     1687           
=======================================
  Hits        11380    11380           
  Misses        237      237           
  Partials      136      136           

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[siriak]

Looks good, thanks!