cmd+p is viable for cmd bar

[Irev-Dev]

We thought that this opening the browser print was baked in, in a way we couldn't get around it with js, but I think we just tried the wrong thing as

document.addEventListener('keydown', function(event) {
  if ((event.metaKey || event.ctrlKey) && event.key === 'p') {
    event.preventDefault()
    
    alert('Command palette would show here!')
  }
})

Works just fine. We could change meta k to meta p etc, or just allow custom hotkeys to be truly custom.

Relates to #5185

[pierremtb]

@Irev-Dev Should it be used as a yet-to-be-built file palette? And CtrlOrCmd+Shit+P as an alternative to CtrlOrCmd+K maybe?