feat: Add `MorseCodeConverter` new algorithm with Junit tests

[Hardvan]

• [x] I have read CONTRIBUTING.md.
• [x] This pull request is all my own work -- I have not plagiarized it.
• [x] All filenames are in PascalCase.
• [x] All functions and variable names follow Java naming conventions.
• [x] All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• [x] All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 95.65217% with 2 lines in your changes missing coverage. Please review.

Project coverage is 64.01%. Comparing base (4a03f42) to head (cc7b9fb).

Files with missing lines	Patch %	Lines
.../thealgorithms/conversions/MorseCodeConverter.java	95.65%	1 Missing and 1 partial :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5749      +/-   ##
============================================
+ Coverage     63.91%   64.01%   +0.10%     
- Complexity     4167     4177      +10     
============================================
  Files           582      583       +1     
  Lines         16302    16348      +46     
  Branches       3148     3154       +6     
============================================
+ Hits          10419    10465      +46     
  Misses         5457     5457              
  Partials        426      426              

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