chore: create github actions

Author: GabrielDVpereira

.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+name: Frontend CI
+
+on: [pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [10.x, 12.x]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }} lint
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - working-directory: client
+        run: |
+          yarn install
+          yarn lint