Support namespace groups in unresolved-namespace linter

[Juholei]

Is your feature request related to a problem? Please describe.
We use an sql library that generates query namespaces in a macro so when running clj-kondo it gives us a lot of unresolved namespace warnings. It would be nice to be able exclude these without listing every single one of the generated namespaces.

Describe the solution you'd like
https://github.com/clj-kondo/clj-kondo/blob/master/doc/config.md#namespace-groups says to create an issue if you want support for namespace groups for other linters. For our problem it would be a solution to define a namespace group with pattern ".*-db$" if unresolved-namespace linter also supported namespace groups.

Describe alternatives you've considered
I haven't come up with any other solution apart from listing all the namespaces manually to be excluded.

[borkdude]

@Juholei Thanks for the issue.

Can you give me more context in the form of real code so I can understand the problem better?
Why aren't you require-ing those namespaces first before where they are used?

Other options:

• support the regex directly in the unresolved-namespace linter.

[Juholei]

We use yesql (or its fork jeesql) sql library which generates functions based on sql files the project. These are then namespaced with a macro defined here in our project https://github.com/solita/etp-core/blob/26b24be0e0bb5b82d93be73ade4952320564a3c1/etp-backend/src/main/clj/solita/etp/db.clj#L79. So the functions and namespaces are generated during runtime so they cannot be required in the actual code files as far as I can tell.

Your suggested other option would work too for this issue.

[borkdude]

So the functions and namespaces are generated during runtime

That doesn't mean you can't write a (:require [your-generated-namespace]) though

[borkdude]

I mean, you just have to ensure that the creation of those namespaces is done before you require those namespaces.

[borkdude]

But happy to support both options.

[borkdude]

:ns-groups + :unresolved-namespace combo is now supported on master