Set up Windows CI

[kaiguo]

Setup Windows CI checks using GitHub action and added one simple UI test.

[jamonholmgren]

@kaiguo Looks like it's failing now.

https://github.com/react-native-community/react-native-webview/pull/1230/checks?check_run_id=704410506

       "D:\a\react-native-webview\react-native-webview\node_modules\react-native-windows\Common\Common.vcxproj" (default target) (7) ->
       (PrepareForBuild target) -> 
         C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Microsoft\VC\v160\Microsoft.CppBuild.targets(390,5): error MSB8020: The build tools for Visual Studio 2017 (Platform Toolset = 'v141') cannot be found. To build using the v141 build tools, please install Visual Studio 2017 build tools.  Alternatively, you may upgrade to the current Visual Studio tools by selecting the Project menu or right-click the solution, and then selecting "Retarget solution". [D:\a\react-native-webview\react-native-webview\node_modules\react-native-windows\Common\Common.vcxproj]

Would you mind looking into this?

[react-native-community-bot]

🎉 This PR is included in version 10.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀