Feature: function keys toggle in the menu bar

[jaime-rivas]

Hi there,

I wanted to send a suggestion for a new feature, including a toggle to enable / disable F1, F2 etc. as standard function keys directly from the Karabiner menu bar. This would be super helpful! And if we can add a keyboard shortcut as well, even better. I created an illustrative mockup with the 2 ideas in green. Thank you so much for maintaining this project.