[DRAFT] [cpp] Add distributed tracing using OpenTelemetry

[DreamPearl]

PROTON-2487

• Add the opentelemetry-cpp library dependencies
• Add opentelemetry-cpp install/build steps in GHA
• Add tracing.cpp file
  • Add tracing spans for messaging operations
  • Add basic attributes[delivery_tag, delivery_state, source_address, destination_address]
• Add a tracing demo file in examples
• Add a test file

[codecov-commenter]

Codecov Report

Merging #319 (aef8cd8) into main (f022cf4) will not change coverage. The diff coverage is n/a.

:exclamation: Current head aef8cd8 differs from pull request most recent head 9f26992. Consider uploading reports for the commit 9f26992 to get more accurate results

@@           Coverage Diff           @@
##             main     #319   +/-   ##
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  Coverage   88.34%   88.34%           
=======================================
  Files          47       47           
  Lines        2394     2394           
=======================================
  Hits         2115     2115           
  Misses        279      279           

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[DreamPearl]

Continuing the changes in the new PR: https://github.com/apache/qpid-proton/pull/355

[DreamPearl]

PR https://github.com/apache/qpid-proton/pull/355 Merged. Closing this.