Schema for ds_config.json

[timoklimmer]

Is your feature request related to a problem?
It is hard for users to know about all the different configuration options when editing a ds_config.json file.

Describe the solution you'd like
A JSON schema file for the ds_config.json should be provided so code editors like VS.Code can support the user in editing the ds_config.json. Benefits would then be for example: in-document descriptions for each setting, code completion, validation.

More details and screenshots at https://code.visualstudio.com/docs/languages/json

Describe alternatives you've considered
JSON schemas are common and would be a great help, especially because the schema for ds_config.json files is really complex. Looking up the documentation lowers productivity.

Additional context
As written above, check out https://code.visualstudio.com/docs/languages/json for details and examples.

[mrwyattii]

@timoklimmer thanks for the suggestion. We are currently in the process of refactoring the DeepSpeed configs to use the PyDantic library (see #2210). Once we have this work complete, we should be able to autogenerate the JSON schemas for our configurations!