offline mode to inspect nats audit output

[wallyqs]

Proposed change

based on the output from a set of nats server request jsz --all --config or nats audit it would be convenient to have a way to reuse the nats server ls, nats server report js and other commands

Use case

To be able to run the same commands like nats server ls, nats server report js in offline mode.

Contribution

No response

[ripienaar]

This is quite difficult because nats audit mangles the data and drops the wrapping that includes server info etc.

Changing it means all past nats audit archives will be invalid :( Seems pretty critical to me that we do that though, mangling the data received from the servers is a very poor foundation to build audit on