Add LogRecordBenchmark

[jack-berg]

Followup to #8031, #8000.

This completes the record side of benchmarks.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.32%. Comparing base (284a64f) to head (2138348).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #8106   +/-   ##
=========================================
  Coverage     90.32%   90.32%           
  Complexity     7607     7607           
=========================================
  Files           839      839           
  Lines         22888    22888           
  Branches       2283     2283           
=========================================
  Hits          20673    20673           
  Misses         1506     1506           
  Partials        709      709           

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