Added github actions for build and run unit tests (#705)

.github/workflows/cmake.yml

@@ -0,0 +1,38 @@
+name: CMake
+
+on: [push, pull_request]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Debug
+
+jobs:
+  build:
+    # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
+    # You can convert this to a matrix build if you need cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+    name: Configure and build using cmake
+    steps:
+      - uses: actions/checkout@v3
+      - uses: awalsh128/cache-apt-pkgs-action@latest
+        with:
+          packages: libzmq3-dev libhdf5-dev qtbase5-dev qt5-qmake libqt5svg5-dev
+          version: 1.0
+
+      - name: Configure CMake
+        # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+        # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+        run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DSLS_USE_TESTS=ON -DSLS_USE_HDF5=ON -DSLS_USE_GUI=ON
+
+      - name: Build
+        # Build your program with the given configuration
+        run: cmake --build ${{github.workspace}}/build -j2 --config ${{env.BUILD_TYPE}}
+
+      - name: Test
+        working-directory: ${{github.workspace}}/build
+        # Execute tests defined by the CMake configuration.
+        # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
+        run: ctest -C ${{env.BUILD_TYPE}} -j1
+
+