Add SociableNumber Implementation

[Rosander0]

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new algorithms include a corresponding test class that validates their functionality.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.82%. Comparing base (6fbbc94) to head (f37df6b).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #7475      +/-   ##
============================================
+ Coverage     79.80%   79.82%   +0.02%     
- Complexity     7302     7314      +12     
============================================
  Files           803      804       +1     
  Lines         23751    23766      +15     
  Branches       4671     4676       +5     
============================================
+ Hits          18955    18972      +17     
  Misses         4036     4036              
+ Partials        760      758       -2     

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