Load specific file types from Google Drive (issue #4878) (#4926)

# Load specific file types from Google Drive (issue #4878)
Add the possibility to define what file types you want to load from
Google Drive.
 
```
 loader = GoogleDriveLoader(
    folder_id="1yucgL9WGgWZdM1TOuKkeghlPizuzMYb5",
    file_types=["document", "pdf"]
    recursive=False
)
```

Fixes ##4878

## Who can review?
Community members can review the PR once tests pass. Tag
maintainers/contributors who might be interested:
DataLoaders
- @eyurtsev

Twitter: [@UmerHAdil](https://twitter.com/@UmerHAdil) | Discord:
RicChilligerDude#7589

---------

Co-authored-by: UmerHA <40663591+UmerHA@users.noreply.github.com>

docs/modules/indexes/document_loaders/examples/google_drive.ipynb

@@ -1,6 +1,7 @@
 {
  "cells": [
   {
+   "attachments": {},
    "cell_type": "markdown",
    "id": "b0ed136e-6983-4893-ae1b-b75753af05f8",
    "metadata": {},
@@ -75,6 +76,29 @@
    "source": [
     "docs = loader.load()"
    ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "id": "2721ba8a",
+   "metadata": {},
+   "source": [
+    "When you pass a `folder_id` by default all files of type document, sheet and pdf are loaded. You can modify this behaviour by passing a `file_types` argument "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "2ff83b4c",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "loader = GoogleDriveLoader(\n",
+    "    folder_id=\"1yucgL9WGgWZdM1TOuKkeghlPizuzMYb5\",\n",
+    "    file_types=[\"document\", \"sheet\"]\n",
+    "    recursive=False\n",
+    ")"
+   ]
   }
  ],
  "metadata": {