Is your feature request related to a problem? Please describe.
Currently, YAML config files are not understood by YAML language servers, and hence auto completion or type checking are not possible when editing config files.

It is really cooooool to have auto completion in yaml, right? I believe it will improve user experience greatly.

Describe the solution you'd like
Provide a new API to export json schema

parser.export_schema(path='path/to/schema.json')

And then I can manually configure my YAML language server (in VSCode, for example) using schema.json