Added BubbleSort algorithm

[sainath868]

• 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 0% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.00%. Comparing base (24f4090) to head (28eafde).

Files with missing lines	Patch %	Lines
...ain/java/com/thealgorithms/sorting/BubbleSort.java	0.00%	12 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6456      +/-   ##
============================================
- Coverage     75.04%   75.00%   -0.04%     
  Complexity     5534     5534              
============================================
  Files           685      686       +1     
  Lines         19208    19220      +12     
  Branches       3706     3710       +4     
============================================
+ Hits          14414    14416       +2     
- Misses         4239     4250      +11     
+ Partials        555      554       -1     

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[DenizAltunkapan]

Already exists here