[cmd/mdatagen]: Add feature gates support to metadata-schema.yaml

[narcis96]

Description:
Added feature-gates section to metadata-schema.yaml together with id, description, stage and other required. This information can then be used for code generation, documentation generation and by other consumers of the metadata.yaml file

Link to tracking Issue: #9860

[mx-psi]

Thanks! Left some comments

[codecov]

Codecov Report

Attention: Patch coverage is 55.88235% with 15 lines in your changes missing coverage. Please review.

Project coverage is 91.72%. Comparing base (461a355) to head (bb65d15).
Report is 258 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/mdatagen/internal/metadata.go	61.29%	11 Missing and 1 partial ⚠️
cmd/mdatagen/internal/command.go	0.00%	2 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (55.88%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11466      +/-   ##
==========================================
- Coverage   91.77%   91.72%   -0.05%     
==========================================
  Files         462      462              
  Lines       24886    24920      +34     
==========================================
+ Hits        22840    22859      +19     
- Misses       1664     1677      +13     
- Partials      382      384       +2     

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[mx-psi]

Can you fix the merge conflict? The CI won't run otherwise

[narcis96]

Can you fix the merge conflict? The CI won't run otherwise

done

[narcis96]

@mx-psi PTAL

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[narcis96]

@mx-psi PTAL

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[narcis96]

@mx-psi PTAL

[narcis96]

@mx-psi PTAL

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.