feat (jans-cedarling): Support JSON claim values that conform to ValueMap and ListMap formats

[djellemah]

This IDP may return a claim that has a JSON value in the token. This is useful in many cases to convey back complex data.

 {`key`: "value"}                    < ValueMap
  
 {"key": ["value"]}                  < ListMap

For example, ListMap can be helpful to avoid role explosion:

"permissions": {
    "Resource1": ["Admin"],
    "Resource2": ["Guest"]
  }

And express polices something like this (syntax may vary if it works):

@desc("Resource 1 Delete Rule")
permit (
  principal is Acme::User,
  action == Acme::Action::"DELETE",
  resource is Acme::Resource::Resource1
) when (
  "Admin" in principal.permissions.Resource1
)

What kind of Cedar schema would be needed for this "permissions" claim?

[djellemah]

Closing this - the functionality here seems to have been moved into #10549

Re-open if tags are needed.