[Feature Request] Config YAML schema validator

[hongsw]

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Yes, users can edit YAML freely, but they don't know if it's valid before running the program.

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Using JSON Schema, create our YAML and JSON specific config files. YAML files should be convertible to JSON.

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Ajv (Ajv JSON schema validator)

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[vkehfdl1]

I think I will be implement this on the library itself.