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.json

@@ -7979,6 +7979,9 @@
                 "description": {
                     "type": "string"
                 },
+                "image": {
+                    "type": "string"
+                },
                 "link": {
                     "type": "string"
                 },
@@ -8012,7 +8015,7 @@
             "type": "object",
             "properties": {
                 "created_at": {
-                    "type": "string"
+                    "type": "integer"
                 },
                 "event_type": {
                     "type": "string"
@@ -8045,6 +8048,7 @@
                 "priority": {
                     "type": "string"
                 },
+                "recipient": {},
                 "schedule_at": {
                     "type": "integer"
                 },
@@ -8067,7 +8071,7 @@
                     "type": "string"
                 },
                 "updated_at": {
-                    "type": "string"
+                    "type": "integer"
                 },
                 "user_id": {
                     "type": "string"
@@ -8347,14 +8351,22 @@
                 "expired",
                 "cancelled",
                 "awarded",
-                "draft"
+                "draft",
+                "closed",
+                "modified",
+                "suspended",
+                "published"
             ],
             "x-enum-varnames": [
                 "TenderStatusActive",
                 "TenderStatusExpired",
                 "TenderStatusCancelled",
                 "TenderStatusAwarded",
-                "TenderStatusDraft"
+                "TenderStatusDraft",
+                "TenderStatusClosed",
+                "TenderStatusModified",
+                "TenderStatusSuspended",
+                "TenderStatusPublished"
             ]
         },
         "tender.UpdateTenderRequest": {