Morserino32 Pocket Variant

Stripped down variant of the Morserino32 open source morse code trainer. Uses a PCM5102 board for I2S audio sidetone. Also requires a heltec lora v3 esp32. Adjusted code can be found here in the "minipcb" branch: https://github.com/haklein/Morserino-32.git
STL for the case are attached. Development is onging, the next revision PCB will also have a speaker connector and will use the adafruit MAX98357a break out board. Stay tuned.