Extract Shade struct and create ShadeRepository

lib/shade_repository/ShadeRepository.h

@@ -0,0 +1,25 @@
+#ifndef SHADE_REPOSITORY_H
+#define SHADE_REPOSITORY_H
+
+#include <vector>
+#include <functional>
+#include "Shade.h"
+
+class ShadeRepository {
+    private:
+        std::vector<Shade> shades;
+        std::vector<std::function<void(Shade&)>> shadeAddedCallbacks;
+        std::vector<std::function<void(Shade&)>> shadeChangedCallbacks;
+
+    public:
+        void upsert(Shade shade);
+        std::vector<Shade>::iterator begin();
+        std::vector<Shade>::iterator end();
+        Shade* findById(const uint16_t id);
+        Shade* findByKey(const std::string& key);
+        
+        void addShadeAddedCallback(std::function<void(Shade&)> callback);
+        void addShadeChangedCallback(std::function<void(Shade&)> callback);
+};
+
+#endif // SHADE_REPOSITORY_H