Show joystick calibration

[Niki-dev12]

Show calibrated joystick axis output in calibration screen

Description

This update chnages the joystick calibration UI by displaying real-time calibrated axis output values for Roll, Pitch, Yaw, and Throttle during and after calibration.
It helps verify that calibration is applied correctly.

Key changes

• Added dynamic axis visualization (AxisMonitor) for each joystick channel.
• Implemented helper functions (joyToAxis, joyToThrottleAxis) to apply clamping and mapping to QGC’s internal range
• Integrated calibration reversal logic so UI reflects post-calibration orientation.
• Updated Connections.onAxisValues to respond immediately to calibration changes.

Test Steps

• Open Joystick Setup Calibration in QGroundControl.
• Move Roll, Pitch, Yaw, and Throttle sticks after calibration.
• Confirm that each Axis Monitor bar responds smoothly and in the correct direction.
• Toggle Reverse on any axis and ensure the visualization flips
• Verify that throttle range maps correctly from 0–1 to –32768..32768.

Checklist:

• Review Contribution Guidelines.
• Review Code of Conduct.
• I have tested my changes.

Related Issue

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