adding a theme InheritedWidget that toggles credit card and stc pay screens as the app Ui (dark , light)

[AbubakerSallam]

MoyasarTheme

added a class MoyasarTheme that will be wrapping the PaymentMethods widget and takes data parametar ( them data of the app , that can be send as needed dark or light).

                  data: AppTheme.darkTheme,
                  child: PaymentMethods(
                    paymentConfig: paymentConfig,
                    onPaymentResult: onPaymentResult,
                  ),
                ),```
<img width="324" height="670" alt="dark1" src="https://github.com/user-attachments/assets/e6612b47-f75f-477b-8ce9-d678cfd313d2" />
<img width="326" height="667" alt="dark2" src="https://github.com/user-attachments/assets/1b8c2944-08dc-4bd6-9ee1-ce6a3eb410c5" />
<img width="325" height="673" alt="light1" src="https://github.com/user-attachments/assets/ed0b57c0-7591-4c07-bb9e-26c96452b5c4" />
<img width="323" height="695" alt="light2" src="https://github.com/user-attachments/assets/6ce7264c-0562-403c-b712-98d2133d89d6" />

[AbubakerSallam]

MoyasarTheme class allows programmers to add thier own styling to the widgets in the package
some pages may need some inhancements, apple pay page isn't modefid.

[AbubakerSallam]