Enhance CMake starter workflow

This enhances and cleans the previous workflow by:

- Using the universal cmake commands
- Using `${{env.BUILD_TYPE}}` instead of enforcing bash shell
- Adding the install and artifact steps

ci/cmake.yml

@@ -17,30 +17,31 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
-      run: cmake -E make_directory ${{runner.workspace}}/build
-
     - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source 
-      # and build directories, but this is only available with CMake 3.13 and higher.  
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE
+      # 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 build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
 
     - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE
+      # Build your program with the given configuration
+      run: cmake --build build --config ${{env.BUILD_TYPE}}
 
     - name: Test
       working-directory: ${{runner.workspace}}/build
-      shell: bash
       # Execute tests defined by the CMake configuration.  
       # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
-      run: ctest -C $BUILD_TYPE
+      run: ctest -C ${{env.BUILD_TYPE}}
+      
+    - name: Install
+      # This step will install your cmake package to the `install` subdirectory.
+      # See https://cmake.org/cmake/help/latest/command/install.html
+      # You probably would want to also take a look at CPack https://cmake.org/cmake/help/latest/module/CPack.html
+      run: cmake --install build --prefix install
+
+    - name: Upload artifact
+      # Upload the installed folder. On linux, you'll want to generate a .tar archive to keep permissions for executables.
+      # See https://github.com/actions/upload-artifact#maintaining-file-permissions-and-case-sensitive-files
+      uses: actions/upload-artifact@v2.2.1
+      with:
+        path: install/*
+