Added github actions to check cmake builds

.github/workflows/cmake.yml

@@ -0,0 +1,48 @@
+name: CMake
+
+on:
+  push:
+  pull_request:
+
+env:
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        include:
+          - name: ubuntu-latest-gcc-cmake
+            os: ubuntu-latest
+            cc: gcc
+            cxx: g++
+            build-system: cmake
+
+          - name: ubuntu-latest-clang-cmake
+            os: ubuntu-latest
+            cc: clang
+            cxx: clang++
+            build-system: cmake
+
+          - name: macos-latest-clang-cmake
+            os: macos-latest
+            cc: clang
+            cxx: clang++
+            build-system: cmake
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Install MacOS dependencies
+      if: startsWith(matrix.os,'macos')
+      run: |
+        brew update
+        brew install llvm
+
+    - name: Configure CMake
+      run: cmake -B ${{github.workspace}}/out -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/out --config ${{env.BUILD_TYPE}}