fix(core): add ephemeral key to payment_create response when customer_id is mentioned (#1133)

crates/api_models/src/lib.rs

@@ -6,6 +6,7 @@ pub mod cards_info;
 pub mod customers;
 pub mod disputes;
 pub mod enums;
+pub mod ephemeral_key;
 #[cfg(feature = "errors")]
 pub mod errors;
 pub mod files;