1d2632a1

By: Michael Lynch <git@mtlynch.io>

Deploy Nix-built images to Fly from NixCI

Add a NixCI deployment target and a deploy-to-fly flake package that builds the image with Nix, pushes it to Fly's registry with Skopeo, and deploys the already-pushed image.
configuredevShellbackendbackend-devcheck-bashcheck-frontendcheck-go-formattingcheck-go-test-packagescheck-trailing-newlinecheck-trailing-whitespacedeploy-to-flydocker-imagee2e-testsgo-app-startergo-app-starter-devgo-testslint-sqlx86_64-linux