added new notifications routes and query key

frontend/constants/index.ts

@@ -15,6 +15,9 @@ export const API_ENDPOINTS = {
         },
         update: "/accounts/profile",
         subscribe: "/accounts/subscribe",
+        notifications: {
+            get_all: "/accounts/notification/all",
+        },
     },
     product: {
         comments: "/products/comments",
@@ -85,6 +88,7 @@ export const QUERY_KEYS = {
     orders: "orders",
     cart: "cart",
     transaction: "transaction",
+    notifications: "notifications",
 };
 
 export const MUTATION_KEYS = {