Add double-click-tab-zoom feature

[IronicUsername]

Goal
When double-clicking on a tab, it should take up 90% of the entire window.

Context
When one got multiple files open next to each other in VSCode, one can just double-click on the tab to make it the "main file" which expands to almost fullscreen
And when clicking on other files in that mode, they get pulled into the foreground.

That would be very cool :)