Add Device::CreateQueue() instead of the builder

We are changing all object creation to use descriptors but there is no
creation argument to pass for queue, so instead Device::CreateQueue
takes no argument.

examples/HelloDepthStencil.cpp

@@ -113,7 +113,7 @@ struct CameraData {
 void init() {
     device = CreateCppNXTDevice();
 
-    queue = device.CreateQueueBuilder().GetResult();
+    queue = device.CreateQueue();
     swapchain = GetSwapChain(device);
     swapchain.Configure(GetPreferredSwapChainTextureFormat(),
                         nxt::TextureUsageBit::OutputAttachment, 640, 480);