New adaptor for integrating with Google Drive

[aleksa-krolls]

Background

See user request from this community post where they want to push/pull files from Google Drive.

Request

To start, this adaptor should:

1. handle authentication
2. include a generic GET helper so we can get any resource
3. include a generic POST so we can create any resource
4. include a generic PUT so we can update any resource

Later we can consider adding more abstraction and specific helper functions. For now, the generic requests would be a great start.

API Docs

https://developers.google.com/drive/api/guides/about-sdk

Credential for Testing

Use personal or openfn Google account to test (1) getting a XLS file from Drive, and (2) uploading a file to Drive.