Title: Add Request/Response editors option for clients

Description:

We have a need to append system-level fields to all requests and enrich client-side error responses.
This PR introduces request and response modifiers in clients as a proposed solution.

Adds support for modifying outgoing requests to include system-specific fields.

Enhances client error handling with additional context and formatting.

Designed to be extendable and minimally invasive to existing logic.

These improvements aim to unify system metadata handling and provide more informative error feedback for consumers.