Embed flatpaks

[korewaChino]

somehow pack Polycrystal inside our build images to embed flatpaks

[linear]

FYRA-456

[tulilirockz]

Note that flatpak preinstall works fine now, it should be just a single service and files on a certain place bam done https://github.com/zirconium-dev/zirconium/blob/main/system_files/usr/lib/systemd/system/flatpak-preinstall.service

[korewaChino]

still needs to be in fedora tho