0.22.0 release

New features:
- ci: add pkg-prepare hook before building Arch package
- ci: install make and sync db before and after pkg-prepare
- init: github: only rebuild ci-images when Dockerfiles change
- init: github: add workflow_dispatch so ci-images can be triggered from UI
- init: github: let tuxpkg job run even when ci-image jobs are skipped
- init: Dockerfile.ci-archlinux: install PKGBUILD deps from pacman
- init: Dockerfile.ci-archlinux: install tuxpkg from pacman repo instead of pip

Bug fixes:
- data: create-repository: fix script