Split out detection system from ResourceManager into DetectionManager

* Split detection system out into its own class, DetectionManager
    * Clean up ResourceManger's many callbacks into just two, one for detection and one general purpose

Controllers/KasaSmartController/KasaSmartControllerDetect.cpp

@@ -9,8 +9,9 @@
 |   SPDX-License-Identifier: GPL-2.0-or-later               |
 \*---------------------------------------------------------*/
 
-#include "Detector.h"
+#include "DetectionManager.h"
 #include "KasaSmartController.h"
+#include "ResourceManager.h"
 #include "RGBController_KasaSmart.h"
 #include "SettingsManager.h"
 
@@ -50,7 +51,7 @@ void DetectKasaSmartControllers()
                 }
 
                 RGBController_KasaSmart* rgb_controller = new RGBController_KasaSmart(controller);
-                ResourceManager::get()->RegisterRGBController(rgb_controller);
+                DetectionManager::get()->RegisterRGBController(rgb_controller);
             }
         }
     }