Create build.yml

Author: lathoub

.github/workflows/build.yml

@@ -0,0 +1,10 @@
+name: build
+on: [pull_request, push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Build on Arduino CLI
+        run: bash ci/build-arduino.sh