[C++][FlightRPC] Enable OpenTelemetry with Arrow Flight

[asfimport]

Sans Python support, at least for now, since figuring out how to do the bindings will be a challenge there. Also see open-telemetry/community#734

Reporter: David Li / @lidavidm
Assignee: David Li / @lidavidm

Related issues:

• [C++] Integrate tracing framework (relates to)

PRs and other links:

• GitHub Pull Request #11920

_{Note: This issue was originally created as ARROW-14958. Please see the migration documentation for further details.}

[asfimport]

Todd Farmer / @toddfarmer:
This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned per project policy. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.

[asfimport]

David Li / @lidavidm:
Issue resolved by pull request 11920
#11920