Move RGBController base destructor functionality into RGBController::Shutdown() so that update thread can be stopped before deleting the controller. Shutdown() must be called in every RGBController implementation before deleting the controller. Also some fixes to the NetworkServer to avoid deadlocking and disconnect issues

Controllers/SRGBmodsController/SRGBmodsLEDControllerV1/RGBController_SRGBmodsLEDControllerV1.cpp

@@ -87,6 +87,8 @@ RGBController_SRGBmodsLEDControllerV1::RGBController_SRGBmodsLEDControllerV1(SRG
 
 RGBController_SRGBmodsLEDControllerV1::~RGBController_SRGBmodsLEDControllerV1()
 {
+    Shutdown();
+
     delete controller;
 }
 

Controllers/SRGBmodsController/SRGBmodsPicoController/RGBController_SRGBmodsPico.cpp

@@ -46,6 +46,8 @@ RGBController_SRGBmodsPico::RGBController_SRGBmodsPico(SRGBmodsPicoController* c
 
 RGBController_SRGBmodsPico::~RGBController_SRGBmodsPico()
 {
+    Shutdown();
+
     delete controller;
 }