Consider standardising specific code generators

[fabiancook]

It would be awesome if there was a cli tool that took an input file and format and generated a directory set of types out of it.

Here is a custom script that takes slacks openapi documentation and creates io-ts types with it using this project... https://github.com/opennetwork/slack-to-open/blob/master/modules/core/openapi-to-typescript.ts