Add stdio dumping to example

[ranweiler]

Support debugging coverage recording by adding an example binary flag to dump the target status, stderr, and stdout.

[codecov-commenter]

Codecov Report

Merging #2757 (5adaadd) into main (5adaadd) will not change coverage.
The diff coverage is n/a.

❗ Current head 5adaadd differs from pull request most recent head 28d1921. Consider uploading reports for the commit 28d1921 to get more accurate results

@@           Coverage Diff           @@
##             main    #2757   +/-   ##
=======================================
  Coverage   29.16%   29.16%           
=======================================
  Files         321      321           
  Lines       38545    38545           
=======================================
  Hits        11240    11240           
  Misses      27305    27305           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.