Convert a JSON object to an Entities type about cedar HOT 6 OPEN

@muse254 Is it possible for you to depend on cedar_policy_validator? It should contain APIs you need to implement such function. In the meanwhile, we will try to make the required APIs to cedar_policy.

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That would be great, thank you!

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Thank you for your interest in Cedar. We have a JSON format for entities, whose documentation can be found here. Once you specify entities in this format, you should be able to call Entities::from_json_str to get the Rust object.

Note that you may need to translate the JSON objects into Cedar's entity JSON format. We're exploring a solution (issue, rfc) that allows you to annotate the Rust type so that objects of a type can be automatically translated to Entities.

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Could there be a possibility of making the proposed solution also have inclusion for dynamic generation of Entities for crate consumers who only get to know the schema and object they are parsing at runtime? @shaobo-he-aws
Or maybe a separate followup implementation

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(note that cedar_policy_validator is not stable and does not come with semver guarantees)

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Is it ok for me to start work on this under an experimental feature?

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