Emphasize usage differences for minimal/nixos runners

Check format

Propagate exit status of nix command

Many more tests!

Preserve stdout from shellhooks

Add shfmt to development environment

Handle stdout from shell hooks

chore(deps): bump cachix/install-nix-action from V27 to 30

chore(deps): bump cachix/install-nix-action from 26 to 27

Re-write re-adme

Add package flake output

Merge pull request #13 from nicknovitski/dependabot/github_actions/cachix/install-nix-action-26

chore(deps): bump cachix/install-nix-action from 25 to 26

Merge pull request #12 from nicknovitski/dependabot/github_actions/cachix/install-nix-action-25

chore(deps): bump cachix/install-nix-action from 24 to 25