Support for RFC 6570-style URI templates

[nimajneb]

While trying to implement the Hypertext Application Language specification in one of my projects I stumbled upon the issue on how to construct a templated URI like this:

"find": { "href": "/orders{?id}", "templated": true }

As it seems there is currently no elegant way to retrieve a previously defined route and its variables from within a ZF2 controller, so maybe it would be nice to have a custom route that exposes some kind of API to get the variable URI parts or maybe even supports that proposed standard RFC 6570?

[Ocramius]

@DASPRiD do you think the syntax of RFC 6570 could be used also in core?

@nimajneb this is awesome input, and we'll probably end up handling this once we get at working at the HATEOAS part (later milestone)