community[patch]: Adding try-except block for GCSDirectoryLoader (#19591)

- **Description:** Implemented try-except block for
`GCSDirectoryLoader`. Reason: Users processing large number of
unstructured files in a folder may experience many different errors. A
try-exception block is added to capture these errors. A new argument
`use_try_except=True` is added to enable *silent failure* so that error
caused by processing one file does not break the whole function.
- **Issue:** N/A
- **Dependencies:** no new dependencies
- **Twitter handle:** timothywong731

---------

Co-authored-by: Bagatur <baskaryan@gmail.com>

docs/docs/integrations/document_loaders/google_cloud_storage_directory.ipynb

@@ -126,17 +126,40 @@
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "id": "f9c0734f",
    "metadata": {},
+   "source": [
+    "## Continue on failure to load a single file\n",
+    "Files in a GCS bucket may cause errors during processing. Enable the `continue_on_failure=True` argument to allow silent failure. This means failure to process a single file will not break the function, it will log a warning instead. "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3d774795",
+   "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "loader = GCSDirectoryLoader(\n",
+    "    project_name=\"aist\", bucket=\"testing-hwc\", continue_on_failure=True\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "0d15f536",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "loader.load()"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3.10.6 64-bit",
    "language": "python",
    "name": "python3"
   },
@@ -151,6 +174,11 @@
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
    "version": "3.10.6"
+  },
+  "vscode": {
+   "interpreter": {
+    "hash": "5f90d085fc70553c85f15dd96b84c64a94d58988a621c9dbc38cac6a7e6079b3"
+   }
   }
  },
  "nbformat": 4,