Add build and test steps in CI on pull request (#602)

.github/workflows/build-test.yaml

@@ -0,0 +1,20 @@
+name: Build and Test
+on:
+  pull_request:
+    types: [opened, edited, synchronize, reopened]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: build
+        run: make build
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: test
+        run: make test