refactor: Enhance docs, add tests in PrintMatrixInSpiralOrder

[Hardvan]

• 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 77.98%. Comparing base (8930369) to head (fcd04d7).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6636      +/-   ##
============================================
- Coverage     78.00%   77.98%   -0.03%     
+ Complexity     6444     6436       -8     
============================================
  Files           737      736       -1     
  Lines         21519    21499      -20     
  Branches       4208     4201       -7     
============================================
- Hits          16785    16765      -20     
- Misses         4062     4063       +1     
+ Partials        672      671       -1     

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[DenizAltunkapan]

Thank you! @Hardvan

[DenizAltunkapan]

.

[DenizAltunkapan]

@Hardvan
I found that there are multiple PrintAMatrixInSpiralOrder classes:

• com.thealgorithms.matrix.PrintAMatrixInSpiralOrder
• com.thealgorithms.others.PrintAMatrixInSpiralOrder

Please remove the duplicate class in the others package and ensure that only one class remains in the matrix package.
Also, move your updated class (with improved documentation) and the corresponding test file into the matrix package so at the end there exists only one class in the matrix folder

[Hardvan]

@DenizAltunkapan Done

[DenizAltunkapan]

Thanks @Hardvan. Please merge from master to merge this pr.

[DenizAltunkapan]

@Hardvan Please resolve the conficts