add notes to payments, unique values route

src/unique.ts

@@ -6,6 +6,7 @@ import { notificationModel } from "./notification/notification.schema";
 import { rtsModel } from "./rts/rts.schema";
 import { taskModel } from "./task/task.schema";
 import { AuthenticatedUser } from "./auth";
+import { paymentModel } from "./payments/payment.schema";
 
 type Collection =
   | "users"
@@ -14,7 +15,8 @@ type Collection =
   | "processed"
   | "notifications"
   | "rts"
-  | "task";
+  | "task"
+  | "payment";
 
 const modelMap = {
   users: userModel,
@@ -24,6 +26,7 @@ const modelMap = {
   notifications: notificationModel,
   rts: rtsModel,
   task: taskModel,
+  payment: paymentModel,
 };
 
 export async function getUniqueFields(