Rework output device identifying info
The output device information is streamlined to send the following information:
- name, same as in xdg-output protocol.
- description, same as in xdg-output protocol.
- make, the manufacturer.
- model, the display model if available.
- serial_number, the serial number of the display.
The arguments name and description mirror the xdg-output v2 protocol. Here description is supposed to be pre-translated by the compositor. The arguments make, model and serial_number allow clients to identify a display over multiple sessions and load back a previous configuration.
Also directly support is added for xdg-output v2 and v3.