Create ubuntu-build-and-test.yml

.github/workflows/ubuntu-build-and-test.yml

@@ -0,0 +1,12 @@
+name: Ubuntu Build and Test
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: make all
+      run: make all