chore(refactor): Refactoring tools tests

[mtodor]

Description

This PR refactor tools tests.

• I have added mocks for central services.
• Changed to use these mocks in related tests.
• Rename tools.go in vulnerability toolset to deployments.go because it contains fetching of deployments. And to match pattern for other tools.

Validation

• Only CI tests and builds, because actual code is not changed

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 108 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.36%. Comparing base (8000112) to head (1905801).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
internal/toolsets/mock/api_server.go	0.00%	108 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #22      +/-   ##
==========================================
- Coverage   85.78%   77.36%   -8.43%     
==========================================
  Files          25       26       +1     
  Lines         964     1109     +145     
==========================================
+ Hits          827      858      +31     
- Misses        104      216     +112     
- Partials       33       35       +2     

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