Fix STM32 compile errors

STM32 code was created for STM32 core lib before 1.6. Compiler errors for newer versions. Now supports current version (1.9)

Readme and layout MBED

Fixed layout, documentation and made sure library compiles for all supported architectures

Update README.md

Robotcar example added

Upgrade version for STM32 support

ESP32 support

Readme

Initial