Allow programmatic flip of the credit card

[leandrorazevedo]

Hello,

I would like to suggest adding a feature that allows flipping the credit card programmatically. This functionality would be useful for cases where we need to show additional information on the back of the card. For exemple: field CVV get a focus.

Implementation Proposal

Add a method that allows controlling the card flip via code, something like:

// Example of the suggested method
void flipCard() {
  // Code to flip the card
}