Telemetry handler experience

[isvargasmsft]

2 things to address:

• [ ] The telemetry handler would only set the client request Id if not already present, allowing people to set it manually if they need some kind of end-to-end tracing.
• [ ] The telemetry handler should start a span and attach the client request id as a tag.

[isvargasmsft]

CC: @samwelkanda @shemogumbe