@webgpu/glslang

This is a GLSL-to-SPIR-V compiler for the Web and Node.
It is a WebAssembly build of glslang.

There are several build configurations:

* dist/web-min-nocompute: Build for web with only vertex/fragment support
and no GLSL compilation messages.
* dist/web-devel-nocompute: Build for web with only vertex/fragment support.
* dist/web-devel: Build for web with all features.
* dist/node-devel: Build for Node with non-async startup and all features.
(To use this, just import @webgpu/glslang.)

Re-building

You shouldn't need to do this, but here is how you can regenerate the files in
dist/. This should work on macOS (with GNU Bison) and on Linux.

$3

- Make sure Emscripten is on the path (e.g. with emsdk, do source emsdk_env.sh first).
- Make sure you have a recent version of GNU Bison installed.
- Install brotli, cmake, and any other necessary build tools.

$3

- Optionally, clean by deleting build/.
- Run build.sh.