Refactor imscope
This MR refactors imscope by introducing changes to the default layout in the config file imgui.ini. The global settings are moved to a new menu item. This modified layout is intended as a suggestion subject to change based on feedback. This MR also adds PDCCH LLR and IQ plots to the UE scope and set axes to AutoFit by default.
Below are screenshots to show the layout:
Edited by Nada Bouknana

