feat(router): Add payment link support (#2105)

Co-authored-by: Sahkal Poddar <sahkal.poddar@juspay.in>
Co-authored-by: Kashif <46213975+kashif-m@users.noreply.github.com>
Co-authored-by: Kashif <mohammed.kashif@juspay.in>
Co-authored-by: Bernard Eugine <114725419+bernard-eugine@users.noreply.github.com>

crates/router/src/routes/lock_utils.rs

@@ -21,6 +21,7 @@ pub enum ApiIdentifier {
     Business,
     Verification,
     ApiKeys,
+    PaymentLink,
 }
 
 impl From<Flow> for ApiIdentifier {
@@ -112,6 +113,8 @@ impl From<Flow> for ApiIdentifier {
             | Flow::BusinessProfileList => Self::Business,
 
             Flow::Verification => Self::Verification,
+
+            Flow::PaymentLinkInitiate | Flow::PaymentLinkRetrieve => Self::PaymentLink,
         }
     }
 }