feat(connector): add surcharge support in paypal connector (#2568)

Author: sai-harsha-vardhan

crates/router/src/connector/paypal.rs

@@ -370,7 +370,10 @@ impl ConnectorIntegration<api::Authorize, types::PaymentsAuthorizeData, types::P
         let connector_router_data = paypal::PaypalRouterData::try_from((
             &self.get_currency_unit(),
             req.request.currency,
-            req.request.amount,
+            req.request
+                .surcharge_details
+                .as_ref()
+                .map_or(req.request.amount, |surcharge| surcharge.final_amount),
             req,
         ))?;
         let req_obj = paypal::PaypalPaymentsRequest::try_from(&connector_router_data)?;