feat: init project with some starter Go code

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+name: "Test"
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  tests:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v26
+      - uses: cachix/cachix-action@v14
+        with:
+          name: devenv
+      - name: Install devenv.sh
+        run: nix profile install nixpkgs#devenv
+
+      - name: Build the devenv shell and run any pre-commit hooks
+        run: devenv test