Display palette method

[rouilj]

This addresses #25.

I am not sure if it's the right way to get App and CommandPal to cooperate, but it works.

// Display the instance
c.displayPalette(true)
// Hide the instance
c.displayPalette(false)
// Toggle from display -> hide or hide -> display
c.displayPalette()

[rouilj]

c.dispatch('close') maybe?

or a wrapper for it for opened/closed and to toggle.

[benwinding]

c.dispatch('close') maybe?

or a wrapper for it for opened/closed and to toggle.

Yeah that would be nice to be able to send events to the Command Pal instance 🤔 Then we'd have c.subscribe('...') and c.dispatch(...)