Add support for the Windows OS

[jaimecbernardo]

This pull request adds support for running react-native-splash-screen with react-native-windows.
It also updates the example to the latest react-native 0.63 and adds an Windows example.

[jaimecbernardo]

Hi @crazycodeboy ,

Since opening this PR, I've made the following additional changes:

• fix a bug where the splash screen would be hidden but still capturing input.
• add automated tests running through the example.
• add a button in the example to show the splash screen again.
• add a github workflow to run the automated tests on pull requests if github actions are turned on.

The PR is now ready for review.
Thank you 😄

[achipa]

This would be really, really great to have - is there anything preventing this PR from going in? Happy to help ironing out any kinks if that's what's holding this up.

[kpete2017]

Is there any estimated time for 0.64 support? Seems like it's currently not compatible.

[jaimecbernardo]

Hi @kpete2017 ,
Thanks for reporting this. I've added a commit with a fix for 0.64.
Please give it a try and let me know.

[Victor0814gui]

Any updates here?👀