Provide an option to use tab/shift-tab to indent/unindent

[b-soder]

Describe your feature request It would be great to have a toggle to be able to use tab/shift-tab to indent/unindent rather than cmd-[/cmd-]

Additional context macOS

[nth-chile]

I think rather than a tool for that shortcut alone, we should introduce a key map that allows people to customize. Until then, there are a couple ways to add your own. I think it's mentioned in the wiki how to do it without downloading another app, but personally, I use "better touch tool"