Introduce github action

.github/workflows/cmake.yml

@@ -0,0 +1,62 @@
+name: CMake
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        # macos-11 is not available - https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners
+        os: [ ubuntu-18.04, ubuntu-latest, macos-latest, windows-latest ]
+    runs-on: ${{matrix.os}}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Install libcurl on Linux
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get update
+        sudo apt-get install libcurl4-openssl-dev
+
+    - name: Install libcurl on macOS
+      if: runner.os == 'macOS'
+      run: |
+        brew update
+        brew install curl
+
+    - name: Install libcurl on Windows
+      if: runner.os == 'Windows'
+      # Will install to C:\ProgramData\chocolatey\lib\curl\tools\curl-7.77.0-win64-mingw
+      run: choco install --no-progress curl
+
+    - name: Configure CMake
+      if: runner.os != 'Windows'
+      # 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}}
+
+    - name: Configure CMake on Windows
+      if: runner.os == 'Windows'
+      # 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}} -DCURL_LIBRARY=C:\ProgramData\chocolatey\lib\curl\tools\curl-7.77.0-win64-mingw\lib -DCURL_INCLUDE_DIR=C:\ProgramData\chocolatey\lib\curl\tools\curl-7.77.0-win64-mingw\include
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{github.workspace}}/build --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}}
+