Description of the new feature/enhancement

VSCode has this nice feature where find "matches" are displayed by a certain color (brown here) in the scrollbar e.g.:

This instantly lets the user know where in the overall file the matches are. IMO this is even more useful in a console with a large scrollback buffer (10000 lines). The example above also shows a mini-map to the left of the scrollbar that also shows matches but I think that would cut into the console too much.

Proposed technical implementation details (optional)

First, while the find dialog is open, ensure the entire scrollbar is visible (not just the little sliver that shows when you're not hovering over the scrollbar). Second, for every match, display a horizontal line of a discernable color that corresponds to each match location in the scrollback buffer.