[Feature Request] SBUS2 Frame Generation

[ericlangel]

For testing Sensors (without Futaba Radio) you would need an Output of SBUS2 Frames

together with #36 you have a complete Simulation for testing ESP32 and Futaba Sensors

The Telemetry Send Timer has to be extended that it's send SBUS2 Data in Demo Mode. Function is already finished for #36 and must be tested and locked against unwanted start.