[BlissLauncher] Add folder feature in BlissLauncher drag and drop

• /e/ version:
• Device model(s):

Summary

BlissLauncher with new drag and drop doesn't have folder support.

The problem

Steps to reproduce

What is the current behavior?

What is the expected correct behavior?

Users should be able to create/update a folder with drag and drop when they hover an app on top of another app/folder.

Technical informations

Relevant logs (adb logcat)

Relevant screenshots

Solutions

Workaround

Possible fixes