Improve CI

.github/workflows/lint.yml

@@ -0,0 +1,21 @@
+name: Lint
+
+on:
+  push:
+    branches:
+      - master
+      - develop
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+    - uses: actions/setup-node@v1
+      with:
+        node-version: 12.x
+    - run: yarn install
+    - run: yarn lint