Add tracing instrumentation to orchestrator clients

[pscoro]

Description

We want to add more tracing instrumentation to the orchestrator to enrich the telemetry thats collected. In particular, this issue tracks the instrumentation of the orchestrator clients. This should also include propagation of the traceparent header to and possibly from the client services and the user.

Acceptance Criteria

• Instrumentation on all handlers and other expensive/significant functions
• Descriptive logging for important blocks of code
• Metrics for client requests are taken
• traceparent propagation
  • Propagate traceparent header to outgoing client requests
  • Check for traceparent header on incoming responses from clients else use the traceparent prepared for the request

The traceparent should not be propagated back in the response of the orchestrator

[pscoro]

Addressed by #231