Hopcroft karp Algorithm implementation and tests

[ptzecher]

• [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

❌ Patch coverage is 95.55556% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.11%. Comparing base (57c6b03) to head (be49e4b).

Files with missing lines	Patch %	Lines
...ain/java/com/thealgorithms/graph/HopcroftKarp.java	95.55%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6465      +/-   ##
============================================
+ Coverage     75.06%   75.11%   +0.05%     
- Complexity     5540     5556      +16     
============================================
  Files           685      686       +1     
  Lines         19219    19264      +45     
  Branches       3709     3719      +10     
============================================
+ Hits          14426    14470      +44     
+ Misses         4239     4238       -1     
- Partials        554      556       +2     

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[DenizAltunkapan]

Please fix the failing checks @ptzecher

[ptzecher]

it passed all checks.Is there anything else that can be done?

[DenizAltunkapan]

Well done.