[Feature] Publish a spec for generators.yml

[billytrend-cohere]

Problem description

generators.yaml config is hard to discover

Why would it be useful?

if we could add a yaml spec and had completions would be easier to discover config

Describe the solution (optional)

you can do something like this # yaml-language-server: $schema=<urlToTheSchema>

https://github.com/redhat-developer/yaml-language-server

[dannysheridan]

Big +1