Support Windows and macOS platforms

[kaiguo]

Description

Adding Windows and macOS supports.

Close microsoft/react-native-windows#4151.
Unblock microsoft/react-native-windows#3884.

Changes

Following the web path to add Windows and macOS stubs. This helps us unblock the usages of react-navigation.

[jakub-gonet]

Have you tested those changes on examples from the Example app?

[kaiguo]

@jakub-gonet Many of the examples use gesture, Windows and macOS don't have react-native-gesture-handler support yet. Also the example app is targeting react-native 0.63, react-native-windows is still on 0.62 so I wasn't able to just add a Windows example app.

I did test some of the pages that don't require gesture in my separate test app, like imperative, progressBar and rotations, they worked fine. We are trying to unblock react-navigation so I tested it in drawer navigation as well, here's a gif I captured earlier : )

[jakub-gonet]

Thanks for testing it.

Even if it's working partially it's better than nothing I guess

[jakub-gonet]

BTW, congrats on such nice PR number 😄

[kaiguo]

@jakub-gonet one more question, can we backport this to 1.x? react-navigation is still on reanimated1, we'd have to wait them to migrate to 2.x to add windows support otherwise.

[jakub-gonet]

Sure, could you prepare the same PR against v1 branch? I want to release 1.10.0 tomorrow.

[kaiguo]

Sure, could you prepare the same PR against v1 branch? I want to release 1.10.0 tomorrow.

Yep, will do it later today. Thanks!