test: add github action

__tests__/.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+name: Build
+# This workflow is triggered on pushes to the repository.
+on: [push]
+
+jobs:
+  build:
+    # Job name is Greeting
+    name: Build
+    # This job runs on Linux
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Use Node.js 12
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+      - name: install
+        run: npm i
+      - name: lint
+        run: npm run lint
+      - name: test
+        run: npm run test