add CI github action

Author: JeremyDolle

.github/workflows/CI.yml

@@ -0,0 +1,23 @@
+name: CI
+
+on:
+  push:
+    branches: [*]
+
+jobs:
+  install-lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install yarn dependencies
+        run: |
+          cd template
+          yarn install
+      - name: Run linters
+        run: |
+          cd template
+          yarn lint
+      - name: Run tests
+        run: |
+          cd template
+          yarn test