[OneCollectorExporter] Failed transmission callback

[CodeBlanch]

Changes

• Extends the transmission callback mechanism so users can opt into receiving failed transmissions

TODOs

• Appropriate CHANGELOG.md updated for non-trivial changes
• Changes in public API reviewed

[codecov]

Codecov Report

Merging #1309 (30cd7db) into main (58607b7) will increase coverage by 0.25%.
The diff coverage is 100.00%.

❗ Current head 30cd7db differs from pull request most recent head 15e5a4c. Consider uploading reports for the commit 15e5a4c to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1309      +/-   ##
==========================================
+ Coverage   74.27%   74.53%   +0.25%     
==========================================
  Files         262      262              
  Lines        9490     9524      +34     
==========================================
+ Hits         7049     7099      +50     
+ Misses       2441     2425      -16     

Files Changed	Coverage Δ
...ector/Internal/Transports/HttpJsonPostTransport.cs	95.41% <100.00%> (+13.41%)	⬆️
...etry.Exporter.OneCollector/OneCollectorExporter.cs	55.00% <100.00%> (+2.36%)	⬆️
...ctorExporterPayloadTransmittedCallbackArguments.cs	94.44% <100.00%> (+0.69%)	⬆️

... and 1 file with indirect coverage changes

[utpilla]

LGTM overall.