Implemented error handler in ChangeValueDisplays

main/bobbyerrorhandler.cpp

@@ -0,0 +1,14 @@
+#include "bobbyerrorhandler.h"
+
+// 3rdparty lib includes
+#include <screenmanager.h>
+
+// local includes
+#include "displays/bobbypopupdisplay.h"
+
+void BobbyErrorHandler::errorOccured(std::string &&error)
+{
+    auto newDisplay = std::make_unique<BobbyPopupDisplay>(std::move(error), std::move(espgui::currentDisplay));
+    newDisplay->initOverlay();
+    espgui::currentDisplay = std::move(newDisplay);
+}