Host Silex-specific versions of the Console commands that use the descriptor

[dominics]

Would there be any interest in hosting Silex-specific versions of the FrameworkBundle commands in this codebase? (i.e. these, but more specifically focussing on the debug:router and debug:event-dispatcher commands).

There are a few Silex-specific subtleties (e.g. passing a RouteCollection to DebugRouterCommand instead of a RouterInterface), so having commands that work with Silex out of the box would seem useful; it'd make using the descriptor itself much easier; just register the Command classes against whatever Console framework you're using in Silex (e.g. I'm using knplabs/console-service-provider)