feat: Add Strassen matrix multiplication algorithm and tests

[ITZ-NIHALPATEL]

• 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

❌ Patch coverage is 35.36585% with 53 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.99%. Comparing base (e21aee8) to head (e92a021).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...lgorithms/matrix/StrassenMatrixMultiplication.java	35.36%	48 Missing and 5 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6942      +/-   ##
============================================
- Coverage     78.15%   77.99%   -0.17%     
- Complexity     6503     6519      +16     
============================================
  Files           741      742       +1     
  Lines         21675    21757      +82     
  Branches       4236     4251      +15     
============================================
+ Hits          16940    16969      +29     
- Misses         4063     4111      +48     
- Partials        672      677       +5     

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