[BENCHMARK] sync instrument recording benchmarks

[dbarker]

Contributes to #4317 and #4416

Adds sync instruments recording benchmarks covering all instrument types and aggregation types. Includes Exemplar filters and bound instruments when enabled.

Changes

• Counter benchmarks
  • Drop aggregation
  • Sum aggregation (by attribute count, by cardinality, by thread count)
• Histogram benchmarks
  • Drop aggregation
  • Explicit bucket and Base2 aggregation (by attribute count, by cardinality, by thread count)
• Gauge benchmarks
  • Drop aggregation
  • Last value aggregation (by attribute count, by cardinality, by thread count)
• ExemplarFilter
  • Counter with AlwaysOff, AlwaysOn, and TraceBased filters
  • Histogram (Default and Base2Expo) with AlwaysOff and AlwaysOn filters
• Bound instruments (counter and histogram)
  • Drop aggregation
  • Sum aggregation (nominal and by thread count)
  • Histogram (default and base2) aggregation (nominal and by thread count)

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.62%. Comparing base (68a575f) to head (7c0db60).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4470   +/-   ##
=======================================
  Coverage   82.62%   82.62%           
=======================================
  Files         512      512           
  Lines       20139    20139           
=======================================
  Hits        16638    16638           
  Misses       3501     3501           

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