Make taggers manifest functions

[mathbunnyru]

Describe your changes

Issue ticket if applicable

Checklist (especially for first-time contributors)

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests
• I will try not to use force-push to make the review process easier for reviewers
• I have updated the documentation for significant changes

[mathbunnyru]

Free functions work as good as Class.staticmethod, but are much shorter.

[mathbunnyru]

I checked locally and created files stayed the same (except built time).
There was only a slight change in the command output (due to changes from CamelCase to snake_case), which is completely fine.