external configuration for router

[kamilsk]

add a possibility to configure route external

as example

	if withProfiler {
		r.Route("/debug/pprof", func(r chi.Router) {
			r.Get("/", pprof.Index)
			r.Get("/cmdline", pprof.Cmdline)
			r.Get("/profile", pprof.Profile)
			r.Get("/symbol", pprof.Symbol)
			r.Get("/trace", pprof.Trace)
		})
	}

this is a not a part of chi router, also as expvar.

[kamilsk]

use specification instead, like

{http.Get, "/api/v1/path"},
{http.Post, "/api/v1/path"},
{http.Get, "/debug/pprof"},
etc.

[kamilsk]

will not do, but specification is good part, it will be done by #16