Google Drive Support

[Xuanwo]

Some notes about google drive API:

OpenDAL requires a path-based API, but google drive located files via its internal id. So we need to maintain:

• a convert util function that converts a given path to id.
• maintain an internal cache for the path -> id mapping, so we don't need to send requests every time.

API references: https://developers.google.com/drive/api/v3/reference

[Xuanwo]

Cc @theshashankpal, I wrote some notes for you. Feel free to ask any questions here~

[Xuanwo]

Hi, @theshashankpal, are there any updates? What help can I give?