Add benchmarks

[utpilla]

Changes

• Add benchmarks for two specific use cases:
  • Create attributes of value types other than static string slices
  • Create attributes of value types other than strings

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.9%. Comparing base (54a3ad1) to head (28ef108).
Report is 2 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2080   +/-   ##
=====================================
  Coverage   77.9%   77.9%           
=====================================
  Files        121     121           
  Lines      21143   21143           
=====================================
  Hits       16478   16478           
  Misses      4665    4665           

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