steam-runtime-tools v0.20221208.0
* pressure-vessel: Pass through Gamescope's special Wayland display
* subprojects: Add a copy of the SteamLinuxRuntime scripts.
This will help us to coordinate changes between steam-runtime-tools and
SteamLinuxRuntime.
* CI: Refactoring
* debian: Stop including redundant source code in
pressure-vessel-relocatable.deb (if source code is required, use the
steam-runtime-tools.dsc source package)