ci(test): add test jobs

Author: satotake

.github/workflows/test.yml

@@ -0,0 +1,25 @@
+name: Test
+on:
+  push:
+    branches:
+      - '*'
+      - '!master'
+jobs:
+  test:
+    name: Release
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - name: Install dependencies
+        run: npm ci
+      - name: Test
+        run: |
+          npm run test:prod
+          npm run build