WIP: Promql comments

[vadimkibana]

WIP

Summary

What is this PR about, keep it short and concise, implementation details can be explained in the next section.

Details

Technical details, breaking changes or considerations you have made while working in this PR.

Checklist

• Unit tests have been added or updated.
• The proper documentation has been added or updated.
• If this PR contains breaking changes, you have explained them using the BREAKING CHANGE: change syntax.
• The PR title has the correct conventional commit label in the title, this is crucial for the correct versioning of this package. Check the following cheat shit.

  Title Label	Release
  breaking: true (!)	major
  feat	minor
  fix	patch
  refactor	patch
  perf	patch
  build	patch
  docs	patch
  chore	patch
  revert	patch