We should look into implementing SSO support in OpenCAD so that communities can have users login into OpenCAD against their own authentication service.

Two options that come to mind are either...

1. We could implement OpenID support but this would require significant rework of the current login system.

2. Implement "HTTP Header Authentication", which would allow OpenCAD to sit behind a reverse proxy (think Autheilia or Cloudflare Access). OpenCAD's login flow would be bypassed and authenticate a user based on a header set by the reverse proxy.

I personally am in favor of the 2nd option as I would prefer to have another application handle authentication instead of OpenCAD itself.