refactor: Group artifacts to LPVS folder, apply small fixes

[o-kopysov]

Pull Request

Description

Current PR includes the following changes:

• removed broken badge from README
• grouped all LPVS artifacts (Projects, Results) to LPVS folder
• changed the name of function runOneScan() -> runSingleScan()
• changed .equals("") to .isEmpty()
• fixed unit tests
• update .gitignore

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code cleanup/refactoring
• Documentation update
• This change requires a documentation update
• CI system update
• Test Coverage update

Testing

Changes tested using UTs

Checklist:

• My code follows the style guidelines of this project
• My code meets the required code coverage for lines (90% and above)
• My code meets the required code coverage for branches (80% and above)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 92.57%. Comparing base (af27e74) to head (53cda5c).

Files	Patch %	Lines
...va/com/lpvs/service/LPVSQueueProcessorService.java	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #557   +/-   ##
=========================================
  Coverage     92.57%   92.57%           
  Complexity      529      529           
=========================================
  Files            48       48           
  Lines          1737     1737           
  Branches        208      208           
=========================================
  Hits           1608     1608           
  Misses           64       64           
  Partials         65       65           

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[m-rudyk]

Approved

[t-naumenko]

LGTM

[o-konoval]

LGTM