feat: add midpoint ellipse algorithm

[saahil-mahato]

• 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 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 70.42%. Comparing base (e4ef072) to head (2a3898f).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5870      +/-   ##
============================================
+ Coverage     70.35%   70.42%   +0.07%     
- Complexity     4781     4794      +13     
============================================
  Files           640      641       +1     
  Lines         17342    17390      +48     
  Branches       3337     3346       +9     
============================================
+ Hits          12201    12247      +46     
- Misses         4680     4681       +1     
- Partials        461      462       +1     

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[siriak]

Looks good, thanks!