refactor: LineSweep

[alxkm]

Class cleanup.
Readability improvements.
New tests added.
Tests refactored.

• 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 88.88889% with 1 line in your changes missing coverage. Please review.

Project coverage is 47.75%. Comparing base (6edc009) to head (b462210).

Files	Patch %	Lines
.../main/java/com/thealgorithms/others/LineSweep.java	88.88%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5398   +/-   ##
=========================================
  Coverage     47.75%   47.75%           
- Complexity     2955     2956    +1     
=========================================
  Files           524      524           
  Lines         15292    15293    +1     
  Branches       2905     2905           
=========================================
+ Hits           7302     7303    +1     
  Misses         7689     7689           
  Partials        301      301           

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