Add GitHub actions

.github/workflows/ccpp.yml

@@ -0,0 +1,17 @@
+name: C/C++ CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-22.04
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: dependencies
+      run: sudo apt-get install cmake make gcc
+    - name: prepare
+      run: cmake .
+    - name: compilation
+      run: make