Allow hiding the buttons in the tab bar line and in the panel title bar

Problem

A small change related to the buttons in the tab bar line: Open Changes Split Editor Close and to the buttons in the panel title bar: New Terminal Split Terminal Kill Terminal Maximize Panel Size Move to Bottom * Close Panel For users who have already memorized the keyboard shortcuts for these commands (and considering the existence of Ctrl-p and Ctrl-Shift-p), the buttons are kind of redundant. It would be nice to have an option to hide them as almost everything in the UI already can be hidden. I know about Zen mode, but Zen mode also centers the text in the editor, hides the panel/terminals, makes Visual Studio Code full screen and all sort of other things which might not be desirable. As a note related to this, Vim and Emacs users generally tend to hide the UI. Funnily enough, even the beast that is IntelliJ IDEA allows it 😆