refactor(connector): [AIRWALLEX, MULTISAFEPAY, RAZORPAY, SHIFT4, WORLDPAY, ZSL] Move connectors from router to hyperswitch_connectors crate

refactor(connector): [AIRWALLEX, MULTISAFEPAY, RAZORPAY, SHIFT4, WORLDPAY, ZSL] Move connectors from router to hyperswitch_connectors crate #18756