fix: changing location of the main file to the correct place and added Documentation as comments

[BKarthik7]

The ArrayRightRotation.java file is place in the test area for the uniform structure I am moving it to main from test
and added url and documentation as comments

Checklist

• I have read CONTRIBUTING.md.
• 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 53.97%. Comparing base (042d458) to head (26da96c).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5545      +/-   ##
============================================
- Coverage     53.99%   53.97%   -0.02%     
+ Complexity     3388     3387       -1     
============================================
  Files           535      535              
  Lines         15429    15429              
  Branches       2942     2942              
============================================
- Hits           8331     8328       -3     
- Misses         6747     6748       +1     
- Partials        351      353       +2     

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[BKarthik7]

@siriak @alxkm @BamaCharanChhandogi @vil02 @yanglbme could you please review this