Make authentication work out of the box

as commented at https://www.drupal.org/project/lupus_decoupled/issues/3323770#comment-14... 📌 Add a ddev and gitpod enabled project template Fixed this is the plan:

Improve setup to:
* add services_env_parameter
* pre-configure cookie domain via env-vars to .ddev.site
* add gitpod command to adjust cookie domain

this is all done. since the shared cookie at .gitpod.io is not secure, I added a security warning to https://github.com/drunomics/lupus-decoupled-project. Seems good enough for testing things with gitpod though.

testing now

works! now we need to fix local-tasks, add a new issue for that!

Automatically closed - issue fixed for 2 weeks with no activity.