JSON Schema library

[rolsonquadras]

Currently, AFG uses https://github.com/xeipuuv/gojsonschema library for JSONSchema validations. The library doesn't look like actively maintained at the moment, as the last update was in Oct 2020. Need to look for some libraries which are actively maintained - some references are available at https://json-schema.org/implementations.html#validator-go.