BREAKING: add customization options to CardForm on Android only

[charliecruzan-stripe]

Summary

Allows the same customization options exposed to CardField

Motivation

Closes #771 and half of #563

Testing

• I tested this manually
• I added automated tests

Documentation

Select one:

• I have added relevant documentation for my changes.
• This PR does not result in any developer-facing changes.

[gauravag23]

You can check color scheme and set cardStyle={{backgroundColor: Appearance.getColorScheme() == 'dark' ? '#000000':'#ffffff'}}as per light or dark theme.

         <CardForm
                cardStyle={{backgroundColor: Appearance.getColorScheme() == 'dark' ? '#000000':'#ffffff'}}
             
            />