Update `Registration.css` and `Registration.html` to enhance UI design. Added a new css class
`.quiqqer-frontendUsers-controls-registrars-list` with properties for flex display, direction, gap,
and width. This class was applied in `Registration.html` to improve the layout of `registrars`
section. Also, removed an unnecessary line in `Registration.php`.

The commit ensures that the onSuccess attribute is a function, and it's successful execution before
proceeding. This is implemented in bin/frontend/controls/login/Login.js. With this fix, potential
errors from incorrectly set onSuccess attributes can be avoided.

Updated 'getProfileBarCategories.php' to validate user session before displaying profile bar items.
Previously, an error was thrown if a user was not found. Explicitly catching the exception to
ensure a smoother user experience.

Related: order-guestorder#10

Double click if QUIQQER_SITE.url had a host. This happens if the project has multiple hosts. This caused an incorrect category to be opened

This commit adds safeguard checks to ensure specific classes ('QUI\\ERP\\Order\\Exception' and
'QUI\\REST\\ResponseFactory') exist before proceeding in
'src/QUI/FrontendUsers/Controls/Address/Address.php' and
'src/QUI/FrontendUsers/Rest/Routes/GetRegisterRequiredFields.php'. If these classes are not found,
the new code logs an error message and throws a general 'QUI\\Exception'.

- Introduced checks for 'setAttribute' and 'getTitle' method existence in FrontendUsers controls.
- Improved type hinting across multiple files.
- Fixed @phpstan-ignore-line.
- Code clean up and tidy in various files.

This commit updates the phpstan version in the .phive/phars.xml file from 1.11.8 to 1.12.13 and
sets its copy attribute to false. It also removes all errors in the phpstan-baseline.neon file as
they are no longer relevant or have been fixed.

In `src/QUI/FrontendUsers/Handler.php`, the 'confirmLink' value has been updated to use the
`getVerificationUrl()` method from its `verification` object. This ensures the correct verification
URL is passed when sending a 'delete user' confirmation email.

feat: new html structure for user profile

See merge request !57

feat: verification api changes

See merge request !55

Add QUIQQER Tooling

See merge request !45