ci: add quality checks and smoke tests

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  quality:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: setup go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: verify dependencies
+        run: go mod download
+
+      - name: vet
+        run: go vet ./...
+
+      - name: test
+        run: go test ./...
+
+      - name: build
+        run: go build ./...
+
+      - name: staticcheck
+        run: go run honnef.co/go/tools/cmd/staticcheck@latest ./...