Impelements and integrates DisplayFactory. Further does some refactoring

FlippR-Driver/src/output/factories/SoundFactory.h

@@ -10,7 +10,7 @@
 
 #include "ItemFactory.h"
 
-#include "output/SoundBoardPinController.h"
+#include "output/detail/SoundBoardPinController.h"
 
 namespace flippR_driver
 {
@@ -23,6 +23,10 @@ public:
   explicit SoundFactory(nlohmann::json & object, std::shared_ptr<SoundBoardPinController> pin_controller);
   std::map<std::string, std::shared_ptr<items::Item>> getItemMap() override;
 
+private:
+  void set_fire_pin();
+  void set_address_pins();
+
 private:
   uint8_t deactivation_time;
 };