Toggle for using mouse as a highlighter

Use case or problem

I would like to just toggle the highlighter once (via command prompt), and my mouse will act as a highlighter until I toggle this function off.
It would also be nice if this also can be implement for bold, italic, and strikethrough.
More efficient highlighting when reading. This is especially nice when using with Extract Highlights plugin

Proposed solution

When toggle on, mouse will act as a Highlighter, until toggle off. (via command promt)