feat: Add `ConvexHull` 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

Attention: Patch coverage is 91.78082% with 6 lines in your changes missing coverage. Please review.

Project coverage is 65.57%. Comparing base (bcf4034) to head (9d6e912).

Files with missing lines	Patch %	Lines
...rc/main/java/com/thealgorithms/geometry/Point.java	66.66%	3 Missing and 3 partials :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5789      +/-   ##
============================================
+ Coverage     65.49%   65.57%   +0.08%     
- Complexity     4339     4367      +28     
============================================
  Files           599      601       +2     
  Lines         16742    16795      +53     
  Branches       3212     3227      +15     
============================================
+ Hits          10965    11014      +49     
- Misses         5332     5334       +2     
- Partials        445      447       +2     

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