Support Goto Definition in vscode

[zhouzq-thu]

The rust-analyzer supports goto definition was fixed by rust-analyzer:14561.
However, opencv-rust doesn't support for now.

[twistedfall]

Do you have an idea what needs to be done to support it? I'm not using rust-analyzer personally so I'm might be a bit disconnected from how it works. But I checked previously and at least code hints worked correctly.

[zhouzq-thu]

Goto definition works fine for the functions like dnn::get_available_backends, but can't goto the right place for the traits (member functions) like model.set_preferable_backend. Maybe the rust-analyzer still has some bugs.

[jackos]

@zhouzq-thu latest rust-analyzer released yesterday fixed this for me

[zhouzq-thu]

Yes, it works now. Thanks for sharing.