Add sourceline output and logging to coverage example

[ranweiler]

Improve the debugging value of example binary.

[codecov-commenter]

Codecov Report

Merging #2753 (d470ced) into main (62a0dd6) will increase coverage by 1.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2753      +/-   ##
==========================================
+ Coverage   29.08%   30.12%   +1.03%     
==========================================
  Files         321      285      -36     
  Lines       38462    32214    -6248     
==========================================
- Hits        11188     9703    -1485     
+ Misses      27274    22511    -4763     

Impacted Files	Coverage Δ
src/agent/onefuzz/src/machine_id.rs	11.53% <0.00%> (-8.98%)	⬇️
src/agent/coverage-legacy/src/test.rs	92.85% <0.00%> (-7.15%)	⬇️
src/agent/onefuzz/src/sanitizer.rs	68.65% <0.00%> (-2.97%)	⬇️
src/agent/onefuzz-agent/src/worker/tests.rs	99.10% <0.00%> (-0.11%)	⬇️
src/agent/onefuzz/src/asan.rs	0.00% <0.00%> (ø)
src/agent/coverage/src/record.rs	0.00% <0.00%> (ø)
src/agent/onefuzz-agent/src/setup.rs	0.00% <0.00%> (ø)
src/agent/onefuzz-agent/src/reboot.rs	0.00% <0.00%> (ø)
src/agent/onefuzz/src/input_tester.rs	0.00% <0.00%> (ø)
src/agent/coverage-legacy/src/cache.rs	0.00% <0.00%> (ø)
... and 49 more

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