JSON intermediate output for standalone codegen executables?

[dstrelau]

Would you be open to a PR that adds a JSON output in the manner @skabbes suggests in this comment?

It looks like outputting the plugin.CodeGenRequest as JSON would be pretty trivial and provide all the relevant info you'd need to write a standalone generator.

[kyleconroy]

I think this is a great idea and should probably be our first official plugin. Sadly, plugin support probably won't make it into 1.14, as we're still waiting on wasmtime-go to ship with native M1 support. In the meantime, we could implement this as an experimental codegen backend, similar to the Python support, and remove it once plugins have shipped.

[dstrelau]

Closed by #1565! Thanks @kyleconroy!