terminalDrobox: implement automatic request of a new auth token #533
Description
Check if Dropbox OAuth implementation supports refresh tokens according to the OAuth 2 specification.
if it does, implement automatic request of a new authorization token using the refresh token when the existing token gets invalidated or expired.
You can save refresh token to AuthorizationTokenDO#AdditionalAttributes in the form refresh_token=... See terminalSalesforce.Infrastructure.Authentication#RefreshAccessToken for an example of implementation.