Document `TraverseFilter`?

[LLCampos]

It's mentioned in the NonEmptyChain docs, but not other mention of it is made in the docs.

[emilhotkowski]

I could help with this, if we still want to document TraverseFilter where do we see it fit on cats page?

[armanbilge]

@emilhotkowski great! You can add a page for it here: https://github.com/typelevel/cats/tree/main/docs/typeclasses