Add impls for kde-output-device-v2 and kde-output-management-v2

cc @vladz @davidedmundson

Requires libraries/plasma-wayland-protocols!9 (merged)

Code is simply duplicated from previous outputdevice_interface and modeId is replaced by size and refresh Rate in relevant functions.

outputdevice_interface could be declared deprecated. I will be implementing support for this interface in KWayland and libkscreen soonish.