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_spi/LedDeviceP9813.h

@@ -0,0 +1,40 @@
+#pragma once
+
+// hyperion include
+#include "ProviderSpi.h"
+
+///
+/// Implementation of the LedDevice interface for writing to P9813 led device.
+///
+class LedDeviceP9813 : public ProviderSpi
+{
+public:
+	///
+	/// Constructs specific LedDevice
+	///
+	/// @param deviceConfig json device config
+	///
+	LedDeviceP9813(const QJsonObject &deviceConfig);
+
+	/// constructs leddevice
+	static LedDevice* construct(const QJsonObject &deviceConfig);
+
+	virtual bool init(const QJsonObject &deviceConfig);
+
+private:
+	///
+	/// Writes the led color values to the led-device
+	///
+	/// @param ledValues The color-value per led
+	/// @return Zero on succes else negative
+	///
+	virtual int write(const std::vector<ColorRgb> &ledValues);
+
+	///
+	/// Calculates the required checksum for one led
+	///
+	/// @param color The color of the led
+	/// @return The checksum for the led
+	///
+	uint8_t calculateChecksum(const ColorRgb & color) const;
+};