OnStep ESP32 mini

OnStep ESP32 mini telescope goto controller on base [Howard Dutton](https://onstep.groups.io/g/main/wiki/3860) project
Key properties:
* The PCB has the same dimensions as the MiniPCB2
* Big USB B port
* Bluetooth
* Wi-Fi
* Internal real time clock and PPS with battery backup
* Port for polar scope illuminator
* DSLR timer or OneWire bus

Wiring diagram and PCB are on [EasyEDA](https://easyeda.com/hujer.roman/onstep-esp-mini).
PCBs are designed in two versions. For full SMD assembly or ​for classic axial resistors and ceramic capacitor.

Pinmaps is based on MaxESP3 but requires the following minor modifications:


#define Aux7 36 // 36 is internal DS3132 PPS or 39 external (GPS) PPS
#define OneWirePin 15 // OneWire bus or Camera timmer
#define ReticlePin 19 // Polar scope iluminator
#define TonePin 2 // Tone

// PEC Optional - not tested
#define PecPin 39
#define AnalogPecPin A3 // PEC Sense, analo