Enhance API Documentation for Notification Target Audience

- Added "target" field reference to the notification request and response structures in Swagger documentation, improving clarity for API consumers.
- Introduced "notification.TargetAudienceType" definition with enumerated values for target audience options, enhancing the API's usability and understanding.
- Updated related documentation files (YAML and JSON) to reflect these changes, ensuring consistency across all API documentation formats.

cmd/web/docs/swagger.json

@@ -7426,6 +7426,9 @@
                 "schedule": {
                     "$ref": "#/definitions/notification.ScheduleRequest"
                 },
+                "target": {
+                    "$ref": "#/definitions/notification.TargetAudienceType"
+                },
                 "tender": {
                     "type": "string"
                 },
@@ -7461,6 +7464,9 @@
                 "schedule": {
                     "$ref": "#/definitions/notification.ScheduleResponse"
                 },
+                "target": {
+                    "$ref": "#/definitions/notification.TargetAudienceType"
+                },
                 "tender": {
                     "type": "string"
                 },
@@ -7538,6 +7544,29 @@
                 }
             }
         },
+        "notification.TargetAudienceType": {
+            "type": "string",
+            "enum": [
+                "all_users",
+                "specific_users",
+                "all_role",
+                "specific_role",
+                "all_companies",
+                "specific_company",
+                "all_customers",
+                "specific_customer"
+            ],
+            "x-enum-varnames": [
+                "TargetAudienceAllUsers",
+                "TargetAudienceSpecificUsers",
+                "TargetAudienceAllRole",
+                "TargetAudienceSpecificRole",
+                "TargetAudienceAllCompanies",
+                "TargetAudienceSpecificCompany",
+                "TargetAudienceAllCustomers",
+                "TargetAudienceSpecificCustomer"
+            ]
+        },
         "response.APIError": {
             "type": "object",
             "properties": {