Add a method in the user namespace to facilitate looking up the associated action for a route

[jsonmurphy]

Currently its difficult to determine what action a particular route maps to. This makes it a bit difficult to trace the steps the application takes to resolve a route without searching all the action namespaces manually.

The solution is to provide a method that resides in the user namespace along with (reset) etc. that allows the user to specify a route e.g. (get-route-info "/") and returns the metadata map for a particular action.

It would also be nice to have a lookup for actions metadata in general by specifying the action id.