plugin: Add ADMT Plugin for ADMT4000

[JJuanill]

Adding implementation of ADMT4000 Harmonic Calibration plugin to Scopy

[andrei47w]

I see the PR is still in progess, but I noticed a few things that might need changing before this is ready for complete review.

• create an xml for emulator so we can test the plugin without needing the hardware (https://github.com/analogdevicesinc/iio-emu/tree/main/tools)
• format code using clang-format version 10 (run tools/format.sh)
• revert change in the main CMakeLists.txt
• admt/CMakeLists:
  • remove unused liked libs from cmake (scopy-gr-util, scopy-iio-widgets)
  • remove UI_LIST uses
• all larger stylesheets from inside .cpp files should be moved to qss using the style infrastructure
• migrate admtstylehelper.cpp to qss style and use Style::getChannelColor instead of redefining colors
• HorizontalSpinBox::setEnabled argument should be bool ?
• rebase with main

[adisuciu]

This looks good ..

Can you clean up the commit history a little bit ? We can also squash and have a single commit for this pull request.