RC/RF link simulation: inter-process radio bus + receiver mapping

[Kinin-Code-Offical]

Goal: external programs can act like an RC transmitter; RobotWin consumes channels via a radio bus with realistic latency/jitter.

Scope:

• IPC transport (UDP or shared-memory ring buffer) for RC channels.
• Map channels to simulated receiver feeding MCU pins/UART or RPi input device.

Acceptance:

• Separate desktop app can transmit channels; RobotWin receives them.

[github-actions]

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