chore: add CI

.github/workflows/ci.yaml

@@ -0,0 +1,51 @@
+name: ci
+
+on:
+  push:
+
+  workflow_dispatch:
+
+permissions:
+  actions: none
+  checks: none
+  contents: read
+  deployments: none
+  issues: none
+  packages: none
+  pull-requests: none
+  repository-projects: none
+  security-events: none
+  statuses: none
+
+# Cancel in-progress runs for pull requests when developers push
+# additional changes
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Echo Go Cache Paths
+        id: go-cache-paths
+        run: |
+          echo "GOCACHE=$(go env GOCACHE)" >> ${{ runner.os == 'Windows' && '$env:' || '$' }}GITHUB_OUTPUT
+          echo "GOMODCACHE=$(go env GOMODCACHE)" >> ${{ runner.os == 'Windows' && '$env:' || '$' }}GITHUB_OUTPUT
+
+      - name: Go Build Cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.GOCACHE }}
+          key: ${{ runner.os }}-go-build-${{ hashFiles('**/go.**', '**.go') }}
+
+      # Install Go!
+      - uses: actions/setup-go@v3
+        with:
+          go-version: "~1.21"
+
+      - name: Test
+        run: go test ./...