feat: Add `Abbreviation` new algorithm with Junit tests

[Hardvan]

• [x] I have read CONTRIBUTING.md.
• [x] This pull request is all my own work -- I have not plagiarized it.
• [x] All filenames are in PascalCase.
• [x] All functions and variable names follow Java naming conventions.
• [x] All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• [x] 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 :white_check_mark:

Project coverage is 66.72%. Comparing base (b35f98a) to head (48dae55).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5790      +/-   ##
============================================
+ Coverage     66.70%   66.72%   +0.02%     
- Complexity     4477     4484       +7     
============================================
  Files           607      608       +1     
  Lines         16901    16913      +12     
  Branches       3259     3264       +5     
============================================
+ Hits          11273    11285      +12     
  Misses         5181     5181              
  Partials        447      447              

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