Wgpu 26

[JMS55]

• Upgrade to wgpu 26
• as_hal() method calls now return values instead of using nested callbacks which is nice for code quality
• Users now pass just TextureView instead of (Texture, TextureView), as wgpu now has a function to get the texture from the view
• Setup code has changed
  • Users now need to request an Instance from dlss_wgpu, in addition to a Device/Queue, as we now enable the instance-level DLSS extensions (before we skipped this step, as wgpu didn't provide a way to do it)
  • Users no longer need to fallback to wgpu's device/queue/instance request functions. Instead, the dlss_wgpu ones will work even if dlss is not supported, and it will tell you whether dlss is usable or not after initializing
  • We use the new wgpu APIs for requesting extra vulkan extensions, rather than replicating wgpu code for device/queue creation

Tested in bevyengine/bevy#19868.