Split RadioComponentController into based class for use with both RC and Joystick cal

[DonLakeFlyer]

• Joystick cal was a duplicated and hacked up version of the RC Cal code. Not only is that crappy, but because of that it was missing some basic functionality which was in RC cal
• Split RadioComponentController code into RadioComponentController which is RC cal specific and generic RemoteControlCalibrationController base class which will be common to RC and Joystick cal
• Updated RC Cal to use the new base class
• Joystick updates to use base class still not done and will come in a later pull
• First step along the way to cleaning up Feature: Add QML-configurable gimbal max speed and deadzones #13280 and joystick cal and gimbal cal

[Copilot]

Pull request overview

This PR refactors the radio calibration code by extracting a generic RemoteControlCalibrationController base class from the existing RadioComponentController, setting the stage for reusing the calibration logic for both RC transmitters and joysticks. The refactoring eliminates code duplication and improves maintainability.

Key Changes:

• Created abstract base class RemoteControlCalibrationController containing common calibration state machine and channel management logic
• Converted RadioComponentController to inherit from the new base class, implementing RC-specific parameter storage/retrieval
• Standardized signal naming across codebase (channelRCValueChanged → channelValueChanged, _rcChannelsChanged → channelValuesChanged)
• Added bounds checking in Vehicle.cc to prevent channel count overflow

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
src/Vehicle/VehicleSetup/RemoteControlCalibrationController.h/.cc	New abstract base class for RC/Joystick calibration with shared state machine logic
src/AutoPilotPlugins/Common/RadioComponentController.h/.cc	Refactored to inherit from base class, implements parameter-specific overrides
src/Vehicle/Vehicle.cc	Added std::min() bounds check for channel count in MAVLink message handling
src/QmlControls/RCChannelMonitorController.h/.cc	Renamed signal/slot to match new naming convention
src/QmlControls/RCChannelMonitor.qml	Updated QML signal handler names
src/AutoPilotPlugins/Common/RadioComponent.qml	Updated QML signal handler names, adjusted UI column width
src/AutoPilotPlugins/PX4/PX4SimpleFlightModesController.h/.cc	Renamed slot to match new naming convention
src/AutoPilotPlugins/APM/APMFlightModesComponentController.h/.cc	Renamed slot to match new naming convention
test/CMakeLists.txt	Removed commented-out test references
test/AutoPilotPlugins/RadioConfigTest.h/.cc	Removed old test files (were already disabled)
test/AutoPilotPlugins/CMakeLists.txt	Removed test directory CMake configuration
src/Vehicle/VehicleSetup/CMakeLists.txt	Added new base class files to build