feat: add github CI file build.yml

.github/workflows/build.yml

@@ -0,0 +1,17 @@
+name: C/C++ CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: cmake configure
+      run: cmake -Bbuild -S.
+    - name: cmake build
+      run: cmake --build build