[Feature] Pass externalPaymentMethodType || paymentMethodType to ExternalPaymentMethodConfirmHandler + PaymentSheetResult

[azazellj]

Is your feature request related to a problem? Please describe.

For external payment type integration I should pass data to BE to notify which payment type was used for the specific transaction. Also I need to apply analytics for payment type.

Describe the solution you'd like

ExternalPaymentMethodResultHandler.onExternalPaymentMethodResult(
   context = fragmentActivity,
   externalPaymentMethodResult = ExternalPaymentMethodResult.completed(paymentMethodType = "external_paypal"),
)

val paymentSheet = rememberPaymentSheet(
   externalPaymentMethodConfirmHandler = remember { viewModel.paymentMethodConfirmHandler },
   paymentResultCallback = { paymentSheetResult ->
      viewModel.handlePaymentSheetResult(paymentSheetResult)
                    
      if (paymentSheetResult is PaymentSheetResult.Completed) {
         val paymentType = paymentSheetResult.paymentMethod,
      }
   },
)

Describe alternatives you've considered

Additional context

• I'm using multiple external payment types

[GIgako19929]

``