Enable WebAssembly

[akrivka]

It'd be great if we could import WebAssembly files in Airtable Apps by default.

Currently, there's no way of overwriting the Webpack config that the block CLI uses, and WebAssembly imports need to be enabled by setting the asyncWebAssembly and syncWebAssembly experimental flags to true (see here https://webpack.js.org/configuration/experiments/). One could build a custom bundler, but that is currently a lot of work and mostly doesn't work.

The changes to do this are minimal, probably just need to add the lines

experiments: {
    asyncWebAssembly: true,
    syncWebAssembly: true,
  },
};

to the createWebpackCompilerConfig function in this file: https://github.com/Airtable/blocks/blob/master/packages/cli-next/src/bundler/webpack_config.ts. I can put up a pull request, but my guess is that this needs to be looked over carefully by and Airtable engineer anyway...

P.S.: The use case I have is running a high-speed cohort-matching algorithm for a large-scale cohort-based virtual program.