feat: Add StockProfitCalculator new algorithm with Junit tests

[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

Attention: Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 66.72%. Comparing base (2a518e3) to head (e5f3a14).

Files with missing lines	Patch %	Lines
...rithms/greedyalgorithms/StockProfitCalculator.java	75.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5793      +/-   ##
============================================
+ Coverage     66.70%   66.72%   +0.02%     
- Complexity     4482     4486       +4     
============================================
  Files           608      609       +1     
  Lines         16913    16921       +8     
  Branches       3264     3265       +1     
============================================
+ Hits          11282    11291       +9     
  Misses         5182     5182              
+ Partials        449      448       -1     

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