feat:Add SwapNumbersUsingXor algo with JUnit tests

[Tanmay-Singh3004]

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.93%. Comparing base (4a03f42) to head (8094e2d).
Report is 21 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5734      +/-   ##
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+ Coverage     63.91%   63.93%   +0.02%     
- Complexity     4167     4169       +2     
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  Files           582      583       +1     
  Lines         16302    16306       +4     
  Branches       3148     3148              
============================================
+ Hits          10419    10425       +6     
+ Misses         5457     5456       -1     
+ Partials        426      425       -1     

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[siriak]

It's not an algorithm, it's a trick. You could just return [a, b] from the method and get the same result, so the xor in this method is not useful to the caller