[communication/send-email] Map for Gmail

[jnv]

Asked by a user via support.

Google Workspace provides an API for working with Gmail including sending email on behalf of the authorized user: https://developers.google.com/gmail/api/guides/sending

I don't think it fits the use case of sending a transactional email, but the communication/send-email profile provides sufficient interface for this.

The biggest blocker here is the lack of authorization flow.