Added basic CI

.github/workflows/c-cpp.yml

@@ -0,0 +1,23 @@
+name: C/C++ CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: build
+      run: |
+        echo "Building project..."
+        mkdir build && cd build
+        cmake ..
+    - name: graph_gtests
+      run: make graph_tests_gtest
+