Cheat sheet panel to show the available shortcuts

[ngokevin]

I like MagicaVoxel's shortcut panel at the bottom. It displays the shortcut for whatever action you are currently hovering over (i.e., given the context), rather than a giant list of shortcuts.

[fernandojsg]

We could add something like h for a fullscreen modal with all the shortcuts like a cheatsheet, and also adding the statusbar with the current action while hover the mouse, I like that