feat(payment_methods_v2): Implemented Diesel and Domain models for v2

crates/diesel_models/Cargo.toml

@@ -14,6 +14,7 @@ v1 = []
 v2 = []
 customer_v2 = []
 payment_v2 = []
+payment_methods_v2 = []
 
 [dependencies]
 async-bb8-diesel = { git = "https://github.com/jarnura/async-bb8-diesel", rev = "53b4ab901aab7635c8215fd1c2d542c8db443094" }

crates/diesel_models/src/kv.rs

@@ -124,11 +124,19 @@ impl DBOperation {
                 Updateable::PayoutAttemptUpdate(a) => DBResult::PayoutAttempt(Box::new(
                     a.orig.update_with_attempt_id(conn, a.update_data).await?,
                 )),
+                #[cfg(all(
+                    any(feature = "v1", feature = "v2"),
+                    not(feature = "payment_methods_v2")
+                ))]
                 Updateable::PaymentMethodUpdate(v) => DBResult::PaymentMethod(Box::new(
                     v.orig
                         .update_with_payment_method_id(conn, v.update_data)
                         .await?,
                 )),
+                #[cfg(all(feature = "v2", feature = "payment_methods_v2"))]
+                Updateable::PaymentMethodUpdate(v) => DBResult::PaymentMethod(Box::new(
+                    v.orig.update_with_id(conn, v.update_data).await?,
+                )),
                 Updateable::MandateUpdate(m) => DBResult::Mandate(Box::new(
                     Mandate::update_by_merchant_id_mandate_id(
                         conn,