chore(transport): Replace axum with matchit

[tottoto]

Motivation

Simplifies dependency tree, and implementations. axum seems to be a relatively too large library for the purpose of implementing tonic's router. Directly using matchit, which is a crate used in axum seems to be simple for tonic.

Solution

warning
This proposal contains breaking changes.

Replaces axum with matchit to implement the router.

[LucioFranco]

So I've actually been using the axum support a lot https://github.com/tursodatabase/libsql/blob/main/libsql-server/src/http/user/mod.rs#L417 for example there. So I think we if we move to matchit we loose this ability to mix and match?

[tottoto]

I think so. axum's router seems not to be able to be got from the matchit's one by the user side.

[LucioFranco]

I think so. axum's router seems not to be able to be got from the matchit's one by the user side.

Yeah then lets keep it how it is for now. its quite useful to use the axum router actually ive found.