FindFine POS

1. Fixed the bug that the secondary screen cannot display payment information
2. Added the store/customer options in menu settings and hardware settings->local settings
3. Fixed the bug that the secondary screen frequently failed to connect
4. Optimized the membership card purchase/stored value payment process on the shopping cart page
5. Added the current price function in menu settings
6. Added the table fee in table settings
7. Display the shopping cart on the secondary screen when ordering