PR-3766: Credit card support support

[lukasz-lenkiewicz]

Its a duplicate of #8 - but with renamed branch

[kumaraksi]

@lukasz-lenkiewicz ca we listen to messages from iframes for error and success?

[lukasz-lenkiewicz]

in order to support javascript, html response needs to be changed similiar way as its for reactnative:

try {
    window.ReactNativeWebView.postMessage(
      JSON.stringify({
        type: '3DS-challenge-completed',
      })
    );
  } catch (e) {}

and use something like:

try {
  window.webkit.messageHandlers.payrails.postMessage(
    JSON.stringify({
      type: '3DS-challenge-completed',
    })
  );
} catch (e) {}

without above, iOS doesnt get the information, thats why atm it works with redirect url which is set by

 window.setTimeout(() => {
  window.location.href = 'https:\/\/www.bootstrap.payrails.io\/success';
}, 500);