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/LedDeviceLpd6803.h

@@ -0,0 +1,40 @@
+#pragma once
+
+// Local hyperion incluse
+#include "ProviderSpi.h"
+
+///
+/// Implementation of the LedDevice interface for writing to LDP6803 led device.
+///
+/// 00000000 00000000 00000000 00000000 1RRRRRGG GGGBBBBB 1RRRRRGG GGGBBBBB ...
+/// |---------------------------------| |---------------| |---------------|
+/// 32 zeros to start the frame Led1 Led2 ...
+///
+/// For each led, the first bit is always 1, and then you have 5 bits each for red, green and blue
+/// (R, G and B in the above illustration) making 16 bits per led. Total bytes = 4 + (2 x number of
+/// leds)
+///
+class LedDeviceLpd6803 : public ProviderSpi
+{
+public:
+	///
+	/// Constructs specific LedDevice
+	///
+	/// @param deviceConfig json device config
+	///
+	LedDeviceLpd6803(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);
+};