vulkan: HDR ASTC formats support

[jinleili]

Connections
#2371

Description

• Add astc_hdr field to PhysicalDeviceFeatures to hold PhysicalDeviceTextureCompressionASTCHDRFeaturesEXT when this feature is supported;
• Set TEXTURE_COMPRESSION_ASTC_HDR feature if astc_hdr is not none, then use this feature to enable extension;
• Enable ExtSwapchainColorspaceFn during create Instance to provide wide color gamut support;
• Choose EXTENDED_SRGB_LINEAR_EXT color space when creating the swapchain;
  • HDR ASTC formarts need linear color space to display, and vulkan swapchain for Android only supports DISPLAY_P3_NONLINEAR_EXT and EXTENDED_SRGB_LINEAR_EXT
  • Maybe better way is using get_physical_device_surface_formats detect color space to choose, but need PhysicalDevice as a parameter that fn create_swapchain cannot provide, that needs to change a lot of code.

Testing
Running on maOS 12.2.1 (M1 Max MacBook Pro, vulkan-portability) can perfectly display HDR ASTC texture via wgpu-on-app demo, but on Ubundu 20.04, currently vulkan driver cannot support WCG color space:

Using llvmpipe (LLVM 13.0.0, 128 bits) (Vulkan)
WARNING: lavapipe is not a conformant vulkan implementation, testing use only.
thread 'main' panicked at 'Error in Surface::configure: requested format Rgba16Float is not in list of supported formats: [Bgra8Unorm, Bgra8UnormSrgb]', /home/parallels/Downloads/forks/wgpu/wgpu/src/backend/direct.rs:231:9

The vk backend on Android has weak support for HDR ASTC formats, I'm tested a lot of Android devices(real devices + cloud devices), all cannot find VK_EXT_texture_compression_astc_hdr extension, screenshots below are of tested cloud Android devices with GL Extensions Viewer installed to detect the vulkan extensions:

[kvark]

Thank you for the PR!
Worth noting that while WebGPU upstream requires Rgba16float, we can't really require it on native. It has to be optional.

[jinleili]

Supplementing Android test info, I changed to another remote Android devices platform, Snapdragon 865+ CPU devices basically all support HDR ASTC formats.