Path-based routing

Path-based routing is done using the reitit.core/match-by-path function. It takes the router and path as arguments and returns one of the following:

• nil, no match
• PartialMatch, path matched, missing path-parameters (only in reverse-routing)
• Match, exact match

(r/match-by-path router "/hello")
; nil

(r/match-by-path router "/api/user/1")
; #Match{:template "/api/user/:id"
;        :meta {:name :user/user}
;        :path "/api/user/1"
;        :result nil
;        :params {:id "1"}}