feat : [AIRWALLEX] integration

Author: yashasvi.kapil

backend/connector-integration/src/connectors.rs

@@ -148,3 +148,6 @@ pub use self::forte::Forte;
 
 pub mod shift4;
 pub use self::shift4::Shift4;
+
+pub mod airwallex;
+pub use self::airwallex::Airwallex;