Feature: Hover for code context

[baristaGeek]

Similar to the interaction we have on our VS Code extension, we want to provide code context per line when hovered. Right now we would be in the capacity of only indexing local info, but once that interaction is built, we can explore adding services to it.

In this PR I tried using EditorMouseMotionListener class to later render a Hint based on the line that's being hovered, but I can't get it to listen despite, being able to initialize it. More on that on this StackOverflow question