[Feature Request] Display specific binding modes and binding mode transparency

[SlyCedix]

I'm using workspaces with bind_to_monitor to create a full set of 10 workspaces for each of my 3 monitors. I'd like to set it up so that my Alt+# keybinds switch to the corresponding desktop on the focused monitor.

Currently my workaround is creating a binding mode for each display entered with Alt+Ctrl+#, though this isn't ideal since there is no command transparency option in binding modes. To solve the lack of transparency, I duplicated my entire set of keybindings to the binding mode for each display, allowing me to use all of my keybindings regardless of what display mode I'm on. Alternatively I could have made them all one shot bindings that exited the binding mode upon focus switching or moving a window.

binding_mode objects should have a transparent property which, when set to true, maps all unbound keys to the none binding mode bindings.

The ability to execute a command on display focus change, or to directly map a binding mode to a specific focused display, would also streamline workflows like these immensely.