SPRacingRXG1 - Initial target support.

[hydra]

SPRacingRXG1

• ESP32-S3 with Wifi (2.4Ghz)
• 2.4Ghz Gemini True Diversity ELRS receiver with telemetry.
• 12 channel PWM, 2 pairs of pins double as first and second UARTs.
• ICM42605/ICM42688P with noise-filtered supply.
• ExpressLRS Gemini RX, with PAs and TCXO.
• USB socket, no need for UART adaptor.
• Battery voltage monitoring.
• Button (for binding/wifi/reset).
• Trimmer pot adjustment for ELRS use (e.g. gyro gain)
• 2-8S battery voltage.
• TVS diode for protection.
• External antennas for ELRS 2.4Ghz Radio.
• Ceramic antenna for WIFI.
• 2x adjustable 3A voltage regulators for HV servos (manually adjustable between ~4.9-~12.9V using trim pots).
• 1x fixed 5V switching regulator.
• 3V switching regulator.
• Selectable voltage for 3 banks of 4 PWM outputs (i.e. 5V (first VReg) or selected voltage on 2nd VReg.
• 2 Uarts available on 1 bank of the PWM outputs.
• Single RGB led
• Header for RGB led output (5V)
• 30.5 x 54.75mm

[hydra]

rebased on master