We'll implement some more features on top of input-method, so let's
incubate our own protocol for now. We'll give feedback upstream
once we've experimented a bit with this approach.
The protocol is minimal: it just includes the features needed for
gamescope. It's always easier to add new requests/events than to
change existing ones.
This allows a Wayland client to send arbitrary UTF-8 text to the
currently focused X11 client. Useful for virtual keyboards.
We generate a keymap on-the-fly suitable for the text to type.
