Make google drive connector accept a URL instead of a path

[jasonwcfan]

Right now, the Google Drive connector requires users input a path to the directory they want to ingest. This is unintuitive and prone to error.

Instead, it should accept a URL to the directory. This is much more intuitive for users since they probably already have that folder open in a tab and can simply copy/paste the URL instead of figuring out what the path should be.

We can then parse the URL to determine the ID of the folder.