Add cli version to audit gather metadata

[alexbozhenko]

Proposed change

When gather was part of the cli, we used to set version:
61c725c#diff-452e58ada64db9f1034b213cadb3affe99b9bda948000988e1255dd007648146L691

we do not do not set any version anymore:
https://github.com/nats-io/jsm.go/blob/fa5c81909624897f9180f942a9ec8bcf8757b12a/audit/gather/gather.go#L273-L279

So we get empty version inside the archive:

# jq '.cli_version' audit_gather_metadata.json
""

Can we pass the version through this call as argument(or part of the config struct?)

natscli/cli/audit_gather_command.go

Line 62 in 5c1d0ef

return gatherer.Gather(nc, c.config)

So we can thread it to the metadata?

Use case

We need to know version of the cli that was used to generated gather archive, e.g. when something does not look right in the output and we need to fiugre out why.

Contribution

I can.