Added additional support for ESP32/ESP8266/Teensy4.0 boards

[iOsnaaente]

Was added the following lines in the VescUart.h file to keep the firmwares compatible with ESP32/ESP8266 and Teensy4.0:

// When using Arduino boards 
#if defined(ARDUINO_AVR_UNO) || defined(ARDUINO_AVR_MEGA2560) 
  #include <SoftwareSerial.h>
  #define SERIAL_PORT_TYPE SoftwareSerial 
// When using ESP32 or ESP8266 boards 
#elif defined(ESP32) || defined(ESP8266)
  #define SERIAL_PORT_TYPE HardwareSerial
// When using Teensy 4.0 board 
#elif defined( __IMXRT1062__ ) 
  #define SERIAL_PORT_TYPE HardwareSerialIMXRT 
// Other boards can be defined below
#else 
  #define SERIAL_PORT_TYPE HardwareSerial 
#endif

In the VescUart.cpp I just change the lines void VescUart::setSerialPort( Stream* port) to void VescUart::setSerialPort( SERIAL_PORT_TYPE* port) where the SERIAL_PORT_TYPE is chosen by the .h file. The VescUart::setDebugPort was modified as the same.

The librarie works well. The code was tested with ESP32 and Teensy4.0 with the Mini FSESC6.7 Pro.

I hope the changes bring new ideias 🤩