fix: Object notifications using partner api (#306)

Author: adilansari

static/api/extensions/v1/api.yaml

@@ -641,6 +641,79 @@ components:
           type: boolean
           description:
             If set to true, per object ACL will be enabled. Default is false.
+        object_notifications:
+          $ref: "#/components/schemas/ObjectNotifications"
+    ObjectNotifications:
+      type: object
+      description: |
+        Configuration for object event notifications via webhook. Receive HTTP callbacks when objects are created, updated, or deleted in your bucket.
+
+        **Update behavior:**
+        - `enabled` is required in all requests
+        - Other fields (webhook, filter, region, auth) are optional and only update when included
+        - Omitted optional fields preserve their existing values
+        - Auth credentials are masked in responses and don't need to be re-sent
+
+        **Common operations:**
+        ```json
+        // Enable notifications (must provide webhook on first enable)
+        {"enabled": true, "webhook": "https://webhook.example.com/events"}
+
+        // Disable temporarily (preserves all config for re-enabling later)
+        {"enabled": false}
+
+        // Update webhook while keeping enabled state
+        {"enabled": true, "webhook": "https://new-endpoint.com"}
+
+        // Change filter only
+        {"enabled": true, "filter": "size > 1000000"}
+
+        // Remove all notifications
+        {"enabled": false}
+        ```
+
+        **Note:** Auth credentials are masked in responses. You don't need to re-send them when updating other fields.
+      required:
+        - enabled
+      properties:
+        enabled:
+          type: boolean
+          description:
+            Enable or disable notifications. When true, webhook must be
+            provided.
+        webhook:
+          type: string
+          format: uri
+          description: HTTPS endpoint to receive notification events
+          example: "https://webhook.example.com/tigris-events"
+        filter:
+          type: string
+          description:
+            SQL WHERE clause to filter which objects trigger notifications
+            (e.g., size comparisons)
+          example: "size > 1000000"
+        region:
+          type: string
+          description:
+            Region to process notifications from (defaults to server region)
+          example: "iad"
+        auth:
+          $ref: "#/components/schemas/ObjectNotificationAuth"
+    ObjectNotificationAuth:
+      type: object
+      description: Authentication credentials for webhook endpoint
+      properties:
+        basic_user:
+          type: string
+          description: Basic auth username
+        basic_pass:
+          type: string
+          description: Basic auth password
+          format: password
+        token:
+          type: string
+          description: Bearer token for authorization
+          format: password
     ProvisioningResponse:
       type: object
     UpdateBucketRequest:
@@ -656,6 +729,8 @@ components:
           type: boolean
           description:
             If set to true, per object ACL will be enabled. Default is false.
+        object_notifications:
+          $ref: "#/components/schemas/ObjectNotifications"
     UpdateBucketResponse:
       type: object
     DeleteBucketResponse:
@@ -866,6 +941,8 @@ components:
           description: If set to true, per object ACL is enabled
         website:
           $ref: "#/components/schemas/BucketWebsiteSettings"
+        object_notifications:
+          $ref: "#/components/schemas/ObjectNotifications"
     GetUsageResponse:
       type: object
       properties: