Move performance test to examples

[mjcarroll]

This performance test flooded the console during CI without adding much value.

This was initially incorporated to prove out worst-case latency when adding locking mechanisms to the console log. Since it doesn't actually make any assertions about behavior or performance, I believe that it makes more sense to live as an example.

The example will generate a CSV file that can be visualized as a histogram to show console logging latency with a variable number of threads.

Alternative to #293

[codecov]

Codecov Report

Merging #294 (795b593) into ign-common4 (ddeab2a) will not change coverage.
The diff coverage is n/a.

❗ Current head 795b593 differs from pull request most recent head 611c403. Consider uploading reports for the commit 611c403 to get more accurate results

@@             Coverage Diff              @@
##           ign-common4     #294   +/-   ##
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  Coverage        77.02%   77.02%           
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  Files               76       76           
  Lines            10727    10727           
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  Hits              8262     8262           
  Misses            2465     2465           

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[chapulina]

Makes sense 👍

[mjcarroll]

Failing test of focal action is another somewhat-flaky performance test

[scpeters]

Failing test of focal action is another somewhat-flaky performance test

restarted