Override native "Go To" options

[rdner]

It would be cool to be able using native "Go To" options on each custom tag with cat- prefix:

“Go To => Declaration” – go to template file of the component (CMD+B)
"Go To => Implementation" – go to JavaScript file of the component (CMD+ALT+B)

If it's possible, we also can add another option "Go To => Store" or keep the current icon "go to component" for opening the bound store's source file. And the same for component's error template.