use WebGPU's getCompilationInfo() to report WESL source errors

[mighdoll]

Collect shader compilation errors and remap them back to WESL source code, and log errors to the debug console.

Hopefully we can also disable WGSL shader errors from appearing in the console.

[greggman]

FYI, there's a wrapper example here you might find a useful reference.

I didn't check it's perfect. Perfect = wrapping only errors related to createShaderModule, returning them appropriately, but not affecting other errors. That was the goal but I haven't actually tested.

[stefnotch]

@greggman Thank you so much for that reference!

For wesl, I decided to let the user opt-in into changing a specific GPUDevice instead of globally changing GPUDevice.prototype.popErrorScope. Hopefully that means that we wont't accidentally mess too much up.

A video of what the end result looks like is here. This is the variant that goes a step further with how it displays the errors.
There's also a mode where it displays errors in the usual browser style (Compilation log for [Invalid ShaderModule...)
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