Add CI

Author: panstromek

.github/workflows/blank.yml

@@ -0,0 +1,18 @@
+name: CI
+
+on:
+  push:
+    branches: [ master, c2rust ]
+  pull_request:
+    branches: [ master, c2rust ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
+      - name: Build
+        run: make -j $(nproc)