Leddevices source tree refactoring (#461)

* rework structure of leddevice source tree

* fix data type vor v4l sig detection value in webui

* automate leddevicefactory.cpp

libsrc/leddevice/dev_other/LedDeviceFile.cpp

@@ -0,0 +1,44 @@
+#include "LedDeviceFile.h"
+
+LedDeviceFile::LedDeviceFile(const QJsonObject &deviceConfig)
+	: LedDevice()
+{
+	init(deviceConfig);
+}
+
+LedDeviceFile::~LedDeviceFile()
+{
+}
+
+LedDevice* LedDeviceFile::construct(const QJsonObject &deviceConfig)
+{
+	return new LedDeviceFile(deviceConfig);
+}
+
+bool LedDeviceFile::init(const QJsonObject &deviceConfig)
+{
+	if ( _ofs.is_open() )
+	{
+		_ofs.close();
+	}
+
+	_refresh_timer_interval = 0;
+	LedDevice::init(deviceConfig);
+
+	QString fileName = deviceConfig["output"].toString("/dev/null");
+	_ofs.open( QSTRING_CSTR(fileName) );
+
+	return true;
+}
+
+int LedDeviceFile::write(const std::vector<ColorRgb> & ledValues)
+{
+	_ofs << "[";
+	for (const ColorRgb& color : ledValues)
+	{
+		_ofs << color;
+	}
+	_ofs << "]" << std::endl;
+
+	return 0;
+}