Add MSBuild C/C++ starter workflow

ci/msbuild.yml

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+name: MSBuild
+
+on: [push]
+
+env:
+  # Path to the solution file relative to the root of the project.
+  SOLUTION_FILE_PATH: .
+
+  # Configuration type to build.
+  # You can convert this to a build matrix if you need coverage of multiple configuration types.
+  # https://docs.github.com/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+  BUILD_CONFIGURATION: Release
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Add MSBuild to PATH
+      uses: microsoft/setup-msbuild@v1
+
+    - name: Restore NuGet packages
+      working-directory: ${{env.GITHUB_WORKSPACE}}
+      run: nuget restore ${{env.SOLUTION_FILE_PATH}}
+
+    - name: Build
+      working-directory: ${{env.GITHUB_WORKSPACE}}
+      # Add additional options to the MSBuild command line here (like platform or verbosity level).
+      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
+      run: msbuild /m /p:Configuration=${{env.BUILD_CONFIGURATION}} ${{env.SOLUTION_FILE_PATH}}

ci/properties/msbuild.properties.json

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+{
+    "name": "MSBuild based projects",
+    "description": "Build a MSBuild based project.",
+    "iconName": "c-cpp",
+    "categories": ["C", "C++"]
+}