[Meta] Introduce new 2.x branch, which refactors, cleans and adjust existing 8.x-1.x code

Ok, I fixed the first few pain points, this is ready to be partially reviewed. Now only the main module logic is left to be adjusted.

All done, works perfectly!

I tested the update hook and all options on both the user edit and register form and they work flawlessly.

Furthermore, I added a few follow-up issues, that could be tackled in the future. See:

• 🐛 [2.x] Fix the AJAX form validation Active
• 📌 [2.x] Define user name validations as validation constraints Active

GREAT work! Let's tag an alpha1 and mark this as non-recommended. So we can test this flawlessly and collect feedback!

Happy to see such a wonderful evolution in the project!

Thanks! Glad you like it. :)
Fixed.

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