Refactored a8 codes and added remote testing app a8_remote.

misc/camera/a8/serialPort.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <QByteArray>
+#include <QObject>
+#include <QSerialPort>
+
+class SerialPort : public QObject
+{
+    Q_OBJECT
+
+public:
+    SerialPort();
+    ~SerialPort();
+
+    bool openPort();
+    void closePort();
+
+public slots:
+    void sendCommand(const QByteArray &command);
+    QByteArray readResponse();
+
+private:
+    QSerialPort *mSerialPort;
+};