Enhance Notification and User Models with New Fields and Update Swagger Documentation

- Added 'image' and 'link' fields to the NotificationRequest and NotificationResponse structures, improving the flexibility of notification content.
- Updated the 'created_at', 'updated_at', and 'schedule_at' fields to use integer types for Unix timestamps, ensuring consistency in time handling.
- Expanded the tender status enumeration to include 'closed', 'modified', 'suspended', and 'published', enhancing the representation of tender states.
- Reflected these changes in the Swagger documentation, ensuring accurate API specifications for clients.

cmd/web/docs/swagger.yaml

@@ -719,6 +719,8 @@ definitions:
         type: array
       description:
         type: string
+      image:
+        type: string
       link:
         type: string
       priority:
@@ -741,7 +743,7 @@ definitions:
   internal_notification.NotificationResponse:
     properties:
       created_at:
-        type: string
+        type: integer
       event_type:
         type: string
       id:
@@ -763,6 +765,7 @@ definitions:
         type: object
       priority:
         type: string
+      recipient: {}
       schedule_at:
         type: integer
       scheduled_at:
@@ -778,7 +781,7 @@ definitions:
       type:
         type: string
       updated_at:
-        type: string
+        type: integer
       user_id:
         type: string
     type: object
@@ -974,6 +977,10 @@ definitions:
     - cancelled
     - awarded
     - draft
+    - closed
+    - modified
+    - suspended
+    - published
     type: string
     x-enum-varnames:
     - TenderStatusActive
@@ -981,6 +988,10 @@ definitions:
     - TenderStatusCancelled
     - TenderStatusAwarded
     - TenderStatusDraft
+    - TenderStatusClosed
+    - TenderStatusModified
+    - TenderStatusSuspended
+    - TenderStatusPublished
   tender.UpdateTenderRequest:
     properties:
       currency: