Added a windows and linux simple compile with cmake (#1543)

* Added a windows and linux simple compile with cmake

Will expand on the file but it will be nice to know if they are some extremely breaking changes in the future. cmake.yml will run two task one for linux build and one for windows build essentially checking that both are working. We can add all platforms later.

* Renaming the task to "CMake Builds" and removing the test step.

Commented out the test step as I don't yet know what the two bash files are doing but they are failing the build.

.github/workflows/cmake.yml

@@ -0,0 +1,93 @@
+name: CMake Builds
+
+on:
+  push:
+  pull_request:
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  build_windows:
+    name: Windows 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: windows-latest
+
+    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 ${{github.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: powershell
+        working-directory: ${{github.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 $env:GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$env:BUILD_TYPE -DPLATFORM=Desktop
+
+      - name: Build
+        working-directory: ${{github.workspace}}/build
+        shell: powershell
+        # Execute the build.  You can specify a specific target with "--target <NAME>"
+        run: cmake --build . --config $env:BUILD_TYPE
+
+#      - name: Test
+#        working-directory: ${{github.workspace}}/build
+#        shell: powershell
+#        # 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
+
+  build_linux:
+    name: Linux 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
+
+    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 ${{github.workspace}}/build
+
+      - name: Setup Environment
+        run: |
+          sudo apt-get update -qq
+          sudo apt-get install gcc-multilib
+          sudo apt-get install -y --no-install-recommends libglfw3 libglfw3-dev libx11-dev libxcursor-dev libxrandr-dev libxinerama-dev libxi-dev libxext-dev libxfixes-dev
+      - 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: ${{github.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 -DPLATFORM=Desktop
+
+      - name: Build
+        working-directory: ${{github.workspace}}/build
+        shell: bash
+        # Execute the build.  You can specify a specific target with "--target <NAME>"
+        run: cmake --build . --config $BUILD_TYPE
+
+#      - name: Test
+#        working-directory: ${{github.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