Added system item support, support for RGBControlers with multiple item backends, and item settings widgets

src/items/systemitem.h

@@ -0,0 +1,34 @@
+#ifndef SYSTEMITEM_H
+#define SYSTEMITEM_H
+
+
+#include "item.h"
+
+class SystemItem : public Item
+{
+Q_OBJECT
+private:
+
+    QString onCommand_;
+    QString offCommand_;
+
+public:
+
+    virtual void setValue(uint8_t value);
+
+public:
+
+    SystemItem(uint32_t itemIdIn = QRandomGenerator::global()->generate(), QString name = "Item", uint8_t value = 0,  QObject *parent = nullptr);
+    SystemItem(const ItemData& itemData,  QObject *parent = nullptr);
+    ~SystemItem() = default;
+
+    void setOnCommand(const QString& in);
+    void setOffCommand(const QString& in);
+    QString getOnCommand(){return onCommand_;}
+    QString getOffCommand(){return offCommand_;}
+
+    virtual void store(QJsonObject& json);
+    virtual void load(const QJsonObject& json, const bool preserve = false);
+};
+
+#endif // SYSTEMITEM_H