Feature: Implement Dingus-clicking

[migueldeicaza]

Support a way of registering a handler to determine whether there is a url worth clicking on the display.

[migueldeicaza]

URL handling is already in place, now needs to be wired up for external patterns.

[kdrag0n]

I'm interested in this feature. From a downstream user request: orbstack/orbstack#345

Hopefully it's not too hard to implement since there's already support for explicit hyperlink support, but unfortunately the priority isn't high enough for me to work on it for now.