v0.6 - STM32 and RP2040, Logger, Error Corrections

• I added a logger which support log levels and improved the error handling a bit.
• Finally I could confirm that the functionality is also working with
  • RP2040
  • STM32

First Release

The first release is ready. It provides:

• Output of decoded audio
• Reading of pcm data from microphone / aux input
• Methods to manage volume, treble, bass, earphones
• Support for real time MIDI
• Flexible SPI Design
• Functioinality implemented in arduino_vs1053 namespace
• Supports Arduino, PlatformIO and cmake
• Supports VS1053 and VS1003 modules