feat(refunds_v2): Add refunds list flow in v2 apis (#7966)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/openapi/src/openapi_v2.rs

@@ -149,6 +149,7 @@ Never share your secret api keys. Keep them guarded and secure.
         //Routes for refunds
         routes::refunds::refunds_create,
         routes::refunds::refunds_retrieve,
+        routes::refunds::refunds_list,
 
         // Routes for Revenue Recovery flow under Process Tracker
         routes::revenue_recovery::revenue_recovery_pt_retrieve_api

crates/openapi/src/routes/refunds.rs

@@ -128,6 +128,7 @@ pub async fn refunds_update() {}
     operation_id = "List all Refunds",
     security(("api_key" = []))
 )]
+#[cfg(feature = "v1")]
 pub fn refunds_list() {}
 
 /// Refunds - List For the Given profiles
@@ -233,3 +234,20 @@ pub async fn refunds_create() {}
 )]
 #[cfg(feature = "v2")]
 pub async fn refunds_retrieve() {}
+
+/// Refunds - List
+///
+/// To list the refunds associated with a payment_id or with the merchant, if payment_id is not provided
+#[utoipa::path(
+    get,
+    path = "/v2/refunds/list",
+    request_body=RefundListRequest,
+    responses(
+        (status = 200, description = "List of refunds", body = RefundListResponse),
+    ),
+    tag = "Refunds",
+    operation_id = "List all Refunds",
+    security(("api_key" = []))
+)]
+#[cfg(feature = "v2")]
+pub fn refunds_list() {}