Pick supported adapter for examples

[arjo129]

Description
On laptops with multiple graphics cards, when trying to run the raytracing examples I get the panic:

[2024-11-12T03:05:39Z WARN  winit::platform_impl::platform::x11::xdisplay] error setting XSETTINGS; Xft options won't reload automatically
[2024-11-12T03:05:39Z INFO  winit::platform_impl::platform::x11::window] Guessed window scale factor: 1.6666666666666667
[2024-11-12T03:05:39Z INFO  wgpu_examples::framework] Initializing wgpu...
[2024-11-12T03:05:40Z INFO  wgpu_core::instance] Adapter AdapterInfo { name: "AMD Radeon Graphics (RADV RENOIR)", vendor: 4098, device: 5688, device_type: IntegratedGpu, driver: "radv", driver_info: "Mesa 24.0.9-0ubuntu0.1", backend: Vulkan }
[2024-11-12T03:05:40Z INFO  wgpu_examples::framework] Using AMD Radeon Graphics (RADV RENOIR) (Vulkan)
thread 'main' panicked at examples/src/framework.rs:291:9:
Adapter does not support required features for this example: Features(EXPERIMENTAL_RAY_TRACING_ACCELERATION_STRUCTURE | EXPERIMENTAL_RAY_QUERY)
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Repro steps
Run the raytracing example on a laptop with an AMD integrated graphics card and a NVidia RTX card.

 cargo run --bin wgpu-examples ray_cube_compute

Expected vs observed behavior
Ideally, we should be able to select the right graphics card prior to instantiating a raytracing pipeline. I'd be open to helping push this along but have limited knowledge of wgpu.

Platform
Ubuntu 24.04 on a Razer Blade 14 AMD Ryzen 9 5900HX with RTX3060.

[teoxoy]

This code would have to be modified to enumerate all adapters and pick the one that satisfies the required features.

wgpu/examples/src/framework.rs

Lines 281 to 295 in 6a60458

	let adapter = wgpu::util::initialize_adapter_from_env_or_default(&instance, surface.get())
	.await
	.expect("No suitable GPU adapters found on the system!");
	let adapter_info = adapter.get_info();
	log::info!("Using {} ({:?})", adapter_info.name, adapter_info.backend);
	let optional_features = E::optional_features();
	let required_features = E::required_features();
	let adapter_features = adapter.features();
	assert!(
	adapter_features.contains(required_features),
	"Adapter does not support required features for this example: {:?}",
	required_features - adapter_features
	);