refactor(http-server-go): use routing enhancements for go 1.22

[c100k]

Suggested by @Gosti.

See resource here : https://go.dev/blog/routing-enhancements

https://github.com/gorilla/mux is not needed anymore to read {id} from the path.

That being said, we still need it for the middlewares (router.Use) and CORS (handlers.CORS).

Let's wait. Maybe Go will provide these natively in next versions as well.