Customizable group names in Template Creator

We've added the ability to rename groups in Template Creator to make organizing and managing templates more intuitive.

• Users can now assign custom names instead of the default Group 1, Group 2, etc.
• Group names are edited in the right most property panel, like other item names.

This improvement makes group organization clearer and more flexible, especially when working with complex templates. The feature is available now for all Template Creator users and requires no additional configuration.