Add setting to enable/disable user login routes from redirecting

Problem/Motivation

A continuation from https://www.drupal.org/project/openid_connect/issues/3011413 ✨ Autologin when one client enabled Needs work

We need to expand the auto login option to allow an administrator the ability to choose which login routes that should be auto redirected. See this MR thread for the original ideas: https://git.drupalcode.org/project/openid_connect/-/merge_requests/98#no...

Proposed resolution

Add a new configuration option that allows an administrator to choose the three user login routes to auto-redirect.

Remaining tasks

- [ ] Add configuration option that allows an administrator to define the routes to redirect
- [ ] Add the code to determine which routes should redirect.
- [ ] Add test coverage to the routes