feat(connector): [Adyen] implement Online Banking Fpx for Adyen (#1584)

Co-authored-by: Sangamesh Kulkarni <59434228+Sangamesh26@users.noreply.github.com>

crates/api_models/src/payments.rs

@@ -855,6 +855,11 @@ pub enum BankRedirectData {
         #[schema(value_type = CountryAlpha2, example = "US")]
         country: api_enums::CountryAlpha2,
     },
+    OnlineBankingFpx {
+        // Issuer banks
+        #[schema(value_type = BankNames)]
+        issuer: api_enums::BankNames,
+    },
 }
 
 #[derive(Debug, Clone, Eq, PartialEq, serde::Deserialize, serde::Serialize, ToSchema)]