MacOS and Windows guide on Android, Yocto, Debian, Ubuntu installation

[UtsavBalar1231]

Using Windows RKDevTool or AndroidTool provided here https://github.com/vicharak-in/rockchip-tools/tree/master/windows/RKDevTool/RKDevTool_Release

[avi951]

I think, MacOS Guide should be added.
@BrajeshPatil has tried it successfully.

Windows and Linux Guide