chore(parser): add --subservices tag

[pedrooot]

Context

Prowler allows to execute checks from a specific service using --service / --services tag

Description

This pr adds the --subservice / --subservices tag in Prowler. This feature allows you to run checks for a specific subservice(s)

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[sergargar]

Good job @pedrooot ! But we will have to check all the subservices within the check's metadata. For example, in Kubernetes there are no subservices.

[sergargar]

And we need to differentiate the service for each subservice.

[codecov]

Codecov Report

Attention: Patch coverage is 34.78261% with 30 lines in your changes are missing coverage. Please review.

Project coverage is 86.51%. Comparing base (45ccd7e) to head (17c341e).
Report is 77 commits behind head on master.

Files	Patch %	Lines
prowler/lib/check/check.py	34.21%	25 Missing ⚠️
prowler/__main__.py	0.00%	4 Missing ⚠️
prowler/lib/check/checks_loader.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3981      +/-   ##
==========================================
- Coverage   86.51%   86.51%   -0.01%     
==========================================
  Files         768      777       +9     
  Lines       23899    24185     +286     
==========================================
+ Hits        20677    20924     +247     
- Misses       3222     3261      +39     

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[jfagoagas]

Are we going to allow the use of --service and --subservice in the same execution? I think it's important just to check an specific subservice instead of all.