Add horizon-gen-nix gitlab-ci module to horizon-ci
Summary
- Re-adds horizon-gen-nix as a reusable option in the horizon-ci module
-
horizon.ci.horizon-gen-nix.enable— enable the validation job -
horizon.ci.horizon-gen-nix.version— configurable version (default:"0.14.0") - Consumers no longer need to inline the job in their ci/nix/ci.nix
Follow-up to: #7 (closed)