Add PlatformIO project setup, local libraries, and PCB Gerber files

- Add platformio.ini for ESP32 DevKit (Arduino framework, espressif32 6.10.0)
- Vendor ArduinoJson, MPU6050_tockn, SCServo, Simple_FOC, and WebSockets
  so a fresh clone builds without downloading dependencies
- Add .gitignore rules for PlatformIO/IDE build artifacts
- Add controller PCB Gerber and drill files

3.Software/libraries/SCServo/SCSerial.h

@@ -0,0 +1,40 @@
+/*
+ * SCSerial.h
+ * 飞特串行舵机硬件接口层程序
+ * 日期: 2019.4.27
+ * 作者: 
+ */
+
+#ifndef _SCSERIAL_H
+#define _SCSERIAL_H
+
+#if defined(ARDUINO) && ARDUINO >= 100
+#include "Arduino.h"
+#else
+#include "WProgram.h"
+#endif
+
+#include "SCS.h"
+
+class SCSerial : public SCS
+{
+public:
+	SCSerial();
+	SCSerial(u8 End);
+	SCSerial(u8 End, u8 Level);
+
+protected:
+	virtual int writeSCS(unsigned char *nDat, int nLen);//输出nLen字节
+	virtual int readSCS(unsigned char *nDat, int nLen);//输入nLen字节
+	virtual int writeSCS(unsigned char bDat);//输出1字节
+	virtual void rFlushSCS();//
+	virtual void wFlushSCS();//
+public:
+	unsigned long int IOTimeOut;//输入输出超时
+	HardwareSerial *pSerial;//串口指针
+	int Err;
+public:
+	virtual int getErr(){  return Err;  }
+};
+
+#endif