[Catalyst] Loading template according to request path

[Matt Whipple]

Is there a presently existing mechanism which flexibly allows for 
template selection according to the request URI?  For instance a request 
to www.myapp.com/somepage would set something like stash(template => 
'somepage.tt') if the file exists and continue to be processed by the 
appropriate or default action.

I wrote something which does this which I'm about to spend some time 
cleaning up and optimizing but don't want to be reinventing any wheels 
(especially likely smoother ones).