empty_enum_variants_with_brackets: Do not lint pub enums and enums used as functions

[ARandomDev99]

Fixes #12551

changelog: [empty_enum_variants_with_brackets]: Do not lint pub enums and enums which are used as functions within the same crate.

[rustbot]

r? @Jarcho

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[ARandomDev99]

r? @xFrednet

[xFrednet]

Thank you for the reassign, you'll get a review from me soon. If you want to do some triaging on PRs that have been waiting for 2(+) weeks for a review you can also ping the reviewer or reassign them. r? clippy will pick a random reviewer but I also have some bandwidth, so r? xFrednet is fine :D

[xFrednet]

This PR is still marked as a draft, is there something you're still waiting on?

[xFrednet]

I'm high jacking this PR for a tiny test.

@bors ping

You can ignore this and (hopefully) the next comment

[bors]

😪 I'm awake I'm awake

[ARandomDev99]

This PR is still marked as a draft, is there something you're still waiting on?

The implementation for checking if an enum variant is used as a function is still pending. I am working on it.

[xFrednet]

Okay, no pressure from my side, just wanted to know the status. Let me know if you have any questions =^.^=