Cannt add "default" http route. Static_file dir should a part of routes

https://github.com/tarantool/http/blob/da78c018a620f88b930f5f1aa0f14fbc39745ccc/http/server.lua#L717-L720
Static_file dir should a part of route.

httpd:route(
            {path = "/*slug", public = true, name = "default"},
            http_middleware.v1(handle_get_default, http_collector)
        )

Currently it is not possible to have "default" http endpoint and static content path at the same time. As "default" overlap "static_file".

I'd like to have default http route to match "unspecified" routes, to log it and return specific/custom response (json, etc.). Currently it is not possible because it iterates/bruteforces:

1. through httpd.routes ;
2. if nothing found from 1., it takes it as "static" content, if found returns funct;
3. and finnaly returns 404 - https://github.com/tarantool/http/blob/da78c018a620f88b930f5f1aa0f14fbc39745ccc/http/server.lua#L611

I suggest "static" directory path should be registered/added to httpd.routes as well.

Start in http/server.lua at the route handling around lines 611 and 717-720, and trace how httpd.routes is checked before static content is served. Compare the requested default route behavior with the existing static-file fallback; done means an unspecified route can be logged and given a custom response while static content remains available.