[GH-26715] Added Pagination Support for IncomingWebHooks (#27502)

* Added Pagination Support for IncomingWebHooks

* Incorporated feedback from reviews

* Removed trailing spaces

* Restored deleted server en.json entries, fixed order in webapp en.json

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

api/v4/source/webhooks.yaml

@@ -83,6 +83,13 @@
           description: The ID of the team to get hooks for.
           schema:
             type: string
+        - name: include_total_count
+          description: >-
+            Appends a total count of returned hooks inside the response object - ex: `{ "incoming_webhooks": [], "total_count": 0 }`.
+          in: query
+          schema:
+            type: boolean
+            default: false
       responses:
         "200":
           description: Incoming webhooks retrieval successful