Fix some warnings in Windows

Author: Steve987321

Engine/src/engine/Engine.cpp

@@ -52,7 +52,7 @@ extern void DrawBuffers(sf::RenderTarget& target);
 }
 
 // finds settings.json and loads them 
-void LoadEngineSettings();
+// void LoadEngineSettings();
 
 static void EventHandler(AppWindow& window)
 {

ToadRunner/src/entry.cpp

@@ -26,4 +26,6 @@ int main(int argc, char** argv)
 	ImGui::SetCurrentContext(Toad::GetWindow().GetImGuiContext());
 
 	Toad::Run();
+
+	return 0;
 }