Port AGL Demo Control Panel to Qt6

Port AGL Demo Control Panel to Qt6

This commit includes the following changes:
V1:
    - Migrated from PyQt5 to PyQt6/PySide6 with minor syntax adjustments.
    - Removed the dependency on qtwidgets and extracted only the required animated toggle module, patching it to work with PyQt6.
    - Updated the README to include new steps for compiling resources.
    - Bumped QtPy from version 2.3.1 to 2.4.1

V2:
    - Refactored set_icon function in Dashboard module to make use of QIcon directly
      instead of using the QtSvg library (Invalid in PyQt6)
    - Syntax changes in UI_Handeler to use PyQt6

V3:
    - Update gitignore
    - Remove dependency on qtpy

Bug-AGL: SPEC-5161

Change-Id: I44499bb5165d5794af7e9aae3407ffae1f7e1928
Signed-off-by: Suchinton <suchinton.2001@gmail.com>