feat(jans-cedarling): support having types in the Cedar resource param

[rmarinn]

Is your feature request related to a problem? Please describe.

Cedarling does not support having types in a Resource. So an HTTP_Request entity defined below cannot be used as a Cedar Resource:

namespace Jans {
    type Url = { "host": String, "path": String, "protocol": String };
    entity HTTP_Request = {
        "url": Url
   };
}

Cedarling return an error like
ResourceEntity(Create(CreateRecord("Jans::Url", MissingClaim("path"))))
when a resource like

{
    "url": "https://some-iss/.well-known/openid-configuration"
}

is given. Since Cedarling doesn't know how to map from string -> Url in the resource.

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