feat(router): add card_discovery in payment_attempt (#7039)

Co-authored-by: hrithikesh026 <hrithikesh.vm@juspay.in>

crates/common_enums/src/enums.rs

@@ -181,6 +181,31 @@ impl AttemptStatus {
     }
 }
 
+/// Indicates the method by which a card is discovered during a payment
+#[derive(
+    Clone,
+    Copy,
+    Debug,
+    Default,
+    Hash,
+    Eq,
+    PartialEq,
+    serde::Deserialize,
+    serde::Serialize,
+    strum::Display,
+    strum::EnumString,
+    ToSchema,
+)]
+#[router_derive::diesel_enum(storage_type = "db_enum")]
+#[serde(rename_all = "snake_case")]
+#[strum(serialize_all = "snake_case")]
+pub enum CardDiscovery {
+    #[default]
+    Manual,
+    SavedCard,
+    ClickToPay,
+}
+
 /// Pass this parameter to force 3DS or non 3DS auth for this payment. Some connectors will still force 3DS auth even in case of passing 'no_three_ds' here and vice versa. Default value is 'no_three_ds' if not set
 #[derive(
     Clone,