feat: Add BcdConversion algo with JUnit tests

[Tanmay-Singh3004]

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• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.95%. Comparing base (4a03f42) to head (d7231e8).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5742      +/-   ##
============================================
+ Coverage     63.91%   63.95%   +0.03%     
- Complexity     4167     4171       +4     
============================================
  Files           582      583       +1     
  Lines         16302    16320      +18     
  Branches       3148     3150       +2     
============================================
+ Hits          10419    10437      +18     
  Misses         5457     5457              
  Partials        426      426              

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