Can't create sub folder in QtDS

as an IDE, it should allow the user to create a folder without OS file explorer.

This is a very important feature for application developers. Imagine having a project containing hundreds of QML files in a QDS project—engineers may struggle to manage them efficiently. Reviewing each file line by line takes significant time and effort.

We request that QDS provide the following improvements:

1. The ability to create folders without relying on OS-specific features.
2. Automatically making newly created subfolders visible to the parent folder without requiring extra imports.
3. Automatically categorizing QML files generated from QtBridge into appropriate folders.