[LPC176x] Emergency Parser Feature (#10516)

Marlin/src/HAL/HAL_AVR/MarlinSerial.cpp

Marlin/src/HAL/HAL_AVR/MarlinSerial.h

Marlin/src/HAL/HAL_DUE/MarlinSerial_Due.cpp

Marlin/src/HAL/HAL_DUE/MarlinSerial_Due.h

Marlin/src/HAL/HAL_LPC1768/HardwareSerial.cpp

Marlin/src/HAL/HAL_LPC1768/HardwareSerial.h

Marlin/src/HAL/HAL_LPC1768/SanityCheck.h

Marlin/src/HAL/HAL_LPC1768/include/Arduino.h

Marlin/src/HAL/HAL_LPC1768/include/serial.h

Marlin/src/HAL/HAL_LPC1768/watchdog.cpp

Marlin/src/core/serial.h

Marlin/src/feature/emergency_parser.cpp

Marlin/src/feature/emergency_parser.h

Marlin/src/module/temperature.cpp

frameworks/CMSIS/LPC1768/lib/usb/cdcuser.cpp