Accent CMS v0.22.0-rc.1

Pre-release for testing. See CHANGELOG.md on the upcoming stable release.

Verifying your download

curl -fsSLO https://raw.githubusercontent.com/AccentCMS/accent/main/release-signing-key.asc
gpg --import release-signing-key.asc
gpg --verify checksums-v0.22.0-rc.1.txt.asc checksums-v0.22.0-rc.1.txt
sha256sum -c --ignore-missing checksums-v0.22.0-rc.1.txt