feature: zebra-scan: Client side authentication

[mpguerra]

Motivation

We want to ensure that only authorised users are able to retrieve results for a given viewing key,

Specifications

We will research the best way to do this in #8154

Complex Code or Requirements

No response

Testing

No response

Related Work

This is part of #7728 and the RPC Interface

[mpguerra]

removing from sprint, this is low priority for now