Rebuilds from the committed source in the SDK container, compiles the
skill card/menu layouts with the CS2 client's resourcecompiler.exe into
the jrandomskills_hud Workshop Tools addon, and publishes
jRandomSkills-<tag>.tar.gz (laid out like game/csgo/) to the git.zio.sh
release. Ends by saying whether the compiled layouts changed, i.e.
whether Workshop item 3807837213 needs re-uploading - players only get
the layouts from the Workshop. Needs FORGEJO_TOKEN in the environment.
