SOLID LOGIN: Obtain the correct path to the solid server registration

[gjwgit]

Description

The current SolidLogin() has a fixed path to the registration page, as $webID/.account/login/password/register/. In the solid_auth package it uses getIssuer() to determine the correct path, which has changed over different versions of the Solid server.

This task is to migrate the same functionality to the new solid package.

[anushkavidanage]

Unfortunately, this is not possible at the moment. It seems that the current version of the CSS does not provide an automatic way of getting the registration link to the server. Even in the examples given in the CSS repo, the registration link is hard coded.
https://github.com/CommunitySolidServer/CommunitySolidServer/blob/d9a3612f3c4850e25bd7bea44c84f6778000a78e/templates/root/static/index.html#L25

[gjwgit]

Thanks @anushkavidanage. Please move this to parked then.