build: add ci (#1)

.github/workflows/ci.yml

@@ -0,0 +1,40 @@
+name: ci
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    services:
+      redis:
+        image: redis
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 6379:6379
+
+    steps:
+      - name: Setup repo
+        uses: actions/checkout@v2
+
+      - name: Setup Deno
+        uses: denolib/setup-deno@v2
+        with:
+          deno-version: "v1.x"
+
+      - name: Format
+        run: deno fmt --check
+
+      - name: Lint
+        run: deno lint --unstable
+
+      - name: Run Tests
+        run: deno test --allow-net