Implement GoogleDrive Loader for LangChain JS

[developer-mide]

Checked

• I searched existing ideas and did not find a similar one
• I added a very descriptive title
• I've clearly described the feature request and motivation for it

Feature request

Our organization needs this feature because it reduces the stress of having to work directly with Google Drive API or third-party tools

Motivation

We are building an RAG application using NextJs, LangChain JS has loaders for Notion, Github, Confluence, and Gmail, which are things we need, but since Google Drive is not supported it will make our code more cumbersome, and this will be a problem for us and many other organization

Proposal (If applicable)

I am a Software Engineer with 7+ years of experience in NodeJs, and Python. I can assist to build this feature

[mrienstra]

Related: #2922

A little odd that https://js.langchain.com/docs/concepts/document_loaders specifically mentions an integration for Google Drive, in a very short list of 3 options:

Document loaders are designed to load document objects. LangChain has hundreds of integrations with various data sources to load data from: Slack, Notion, Google Drive, etc.

... this is likely due to such an integration existing on the Python side?