M5StickC ESP32 Oscilloscope

A fully functional oscilloscope based on ESp32 M5StickC ported from https://github.com/botofancalin/M5Stack-ESP32-Oscilloscope

Changes from original

Channel 1 Input: Pin 26
Channel 2 input: Pin 36
PWM signal Output: Pin 33
SignaDelta Output: Pin 32
Key B: Menu selection
Key A: Next Selected item (loop)