No-frills bindings to the WebGPU API.

1. As close to the WebGPU spec as possible.
2. Very limited type-level machinery.
3. Clickable docs.
4. Small, single-purpose files.
5. Tests as much of the surface area as possible.

1. Fancy abstractions.

An early test. Make sure to use Chrome. If this stops working, it's because my origin trial stopped working. Sorry.