Feature Request: Make Apple Button Responsive to Bright/Dark Theme

[tillchen]

Thanks for developing this amazing package!

I'll be great if the Apple button can become responsive to bright/dart theme change. According to the guide: https://developer.apple.com/design/human-interface-guidelines/sign-in-with-apple/overview/buttons/ , the button should have different styles for bright/dart mode.

[ZaynJarvis]

this could be a really interesting idea as well, for responsiveness, we will look into how to detect os theme, and think about giving a automatic button theme like Google-auto Apple-auto and stuff.