Implementing the Show Hover features

[Rikki407]

Hovers show information about the symbol/object that's below the mouse cursor.
Hovers can help to easily show the parsed errors or the description of the symbol/object.

I have already started working on this feature, and for now, it can display the word it's been hovered on and if there exists a parsing error.

[Rikki407]

I would like to continue work on this if it gets accepted as a viable feature.

[dselman]

Do you have examples of useful information to display in the hover?