Move the CentOS Stream 9 based test from Cirrus CI to GitHub
Actions using Lima VMs. Expand coverage to a matrix of CentOS
Stream 9 and 10 on x86_64.
Extract the common Lima VM setup steps (Lima install, image
caching, KVM enablement, VM start, source copy) into a reusable
composite action at .github/actions/lima-vm-setup.
Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Adrian Reber <areber@redhat.com>
