Nova-C OS update repository

APT repository for Nova-C OS. Installed systems already use it and install updates automatically. Signing key fingerprint: DCE1A5EB94CF11662D159A8187D1670A09C704C1.

trixie|main|amd64: nova-c-archive-keyring 0.1.1
trixie|main|amd64: nova-c-desktop 0.2.3
trixie|main|amd64: nova-c-driver-manager 0.1.0
trixie|main|amd64: nova-c-touch 0.1.0

Manual setup on a Debian 13 system:

sudo curl -fsSLo /usr/share/keyrings/nova-c-archive-keyring.gpg https://jj611a.github.io/nova-c-os/nova-c-archive-keyring.gpg
printf 'Types: deb\nURIs: https://jj611a.github.io/nova-c-os/\nSuites: trixie\nComponents: main\nSigned-By: /usr/share/keyrings/nova-c-archive-keyring.gpg\n' \
  | sudo tee /etc/apt/sources.list.d/nova-c.sources
sudo apt update && sudo apt install nova-c-desktop