ESP32 V3.0 Release

Correct compile error caused by B1000000 enum in ESP32 core

Support for Desktop, RP2040 and MBED

• Support to compile on desktop
• Support for rp2040
• Support for mbed devices
• Error corrections

First Release

First Release tested with the ESP32
Used by https://github.com/pschatzmann/arduino-espeak-ng