Fix OAuth2 Token Renewal, Address SSL Certificates Issue, and other fixes

[vsychov]

Description:
This PR addresses several critical fixes and enhancements:

1. OAuth2 Token Renewal:

   • Added functionality to properly renew OAuth2 tokens, ensuring seamless authorization flow.
   • Fixes the removed Out-of-Band (OOB) authorization flow, aligning with Google's updated authentication requirements.

2. MIME Type Fix:

   • Corrects file MIME type determination, resolving an issue with previewing images uploaded via the FTP server.

3. Docker SSL Certificates:

   • Fixes the SSL certificates in the Docker container to prevent issues caused by incorrect certificate paths.

These updates align with and build upon the improvements introduced in fclairamb/afero-gdrive#257.