update add_list_item return type for sharepoint service

gso/services/sharepoint.py

@@ -46,14 +46,20 @@ class SPClient:
             .items.get(request_configuration=request_configuration)
         )
 
-    async def add_list_item(self, list_name: str, fields: dict[str, str]):
+    async def add_list_item(self, list_name: str, fields: dict[str, str]) -> str:
         """Add a new entry to a SharePoint list.
 
         :param str list_name: The name of the list.
         :param dict[str, str] fields: Any pre-filled fields in the list item. Can be left empty.
+
+        :return str: The URL of the list in which a new item has been created.
         """
         request_body = ListItem(fields=FieldValueSet(additional_data=fields))
-        return (
+        new_item = (
             await self.client.sites.by_site_id(self.site_id)
-            .lists.by_list_id(self.list_ids[list_name]).items.post(request_body)
+            .lists.by_list_id(self.list_ids[list_name])
+            .items.post(request_body)
         )
+
+        #  Strip the last part of the URL, since we want the link to the list, not the list item.
+        return new_item.web_url.rsplit("/", 1)[0]