I/O processor status

Completed PWM input decode and sending results via USB.  For the first pass I'm using a HK-T6A transmitter/receiver.

Overall Status:

• I/O processor:  GD32F103 (red pill board) 
• Interprocess commuinication via USB complete
• Receiver PWM decode
• GPS decode
• Next is to do PWM for motor control
• Standard PWM out
• Support one shot125
• Need validate USB jitter and performance
• Out should be less then a 1ms
• In should be no more then 2ms
• Cleanflight
• Update IPC using USB
• Add socat for CleanFlight Configuration Web Tool
•  open a TCP/IP port in CleanFlight 
• use socat on Linux to forward MSP packets.