Create eslint.yml

.github/workflows/eslint.yml

@@ -0,0 +1,15 @@
+name: lint
+
+on:
+  push:
+    branches: '*'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install modules
+      run: yarn
+    - name: Run ESLint
+      run: eslint . --ext .js,.jsx,.ts,.tsx