Because Winit has changed quite a bit since 0.19, some of the test lifecycle had to change.

Explanation of the changes:
1) `EventLoop::run` is the new way of starting the event loop. This function will never return. There is `EventLoop::run_return` but that does not exist on macOS, so let's use `EventLoop::run` so all platforms may use the same code.
2) Since the callback winit takes is 'static and I need to process some destructor code, the `ExampleBase::run` function now takes a state object, of type `T`. The state object may be accessed while rendering and when the application is exiting, allowing destruction of Vulkan state.
3) Invocation of the rendering function needs to occur in `RedrawRequested`and we request a redraw always after rendering.
4) Eliminate the `RefCel`l around the event loop by having the event loop outlive the entire application. This means `ExampleBase::new`'s function signature now returns `(EventLoop<()>, Self)`

The code appears to run properly after testing.