A fix has been applied in the src/QUI/TemplateCologne/Utils.php file. A condition has been added to
check whether the PRODUCT_FIELD_SHIPPING_TIME constant is defined. If not, the function will return
false to prevent any potential errors.

Several changes have been made, primarily around checking the existence of methods and classes and
removing unnecessary comments.

- Method checks have been introduced to ensure the `getCachePath()` method exists before calling it.
- Removed invalid phpDocs, e.g., @var $Site Site and @var $Project Project
- Fixed typing to align return types and updated a factory method to check class existence.
- Added variable definition comments in the settings.css.php file for clarity.

Related: #114

Related: brassberg/tickets#244


(cherry picked from commit 28cc1658)

Co-authored-by: Michael Danielczok <michael@pcsg.de>

Related: #74

Related: order-simple-checkout#1

Related: #100

feat: Separate lang and currency switch. New template settings to manage this controls #86 #76

feat: New setting --> detatch nav from top and place it initialy by scrolling at the top.

feat: Menu logo has width and height properites.

#15

feat: show stock field if quiqqer/stock-management is installed

feat: HTML structure redesigned.