chore: add benchmarks for to-string

[achingbrain]

Adds benchmarks to compare various stringification methods

Node:

$ node benchmarks/to-string.js                                     
Uint8Arrays.toString x 349,476 ops/sec ±2.40% (82 runs sampled)
TextDecoder x 363,460 ops/sec ±3.77% (64 runs sampled)
utf8ReadFromCharCode x 1,833,389 ops/sec ±0.82% (90 runs sampled)
utf8ReadConcat x 1,182,950 ops/sec ±0.39% (89 runs sampled)
Buffer.toString x 3,322,147 ops/sec ±0.53% (87 runs sampled)
Fastest is Buffer.toString

Chrome:

$ npx playwright-test benchmarks/to-string.js --runner benchmark
✔ chromium set up
Uint8Arrays.toString x 1,245,619 ops/sec ±2.81% (63 runs sampled)
TextDecoder x 1,660,401 ops/sec ±1.62% (60 runs sampled)
utf8ReadFromCharCode x 2,867,464 ops/sec ±0.34% (67 runs sampled)
utf8ReadConcat x 1,737,527 ops/sec ±0.24% (68 runs sampled)
Fastest is utf8ReadFromCharCode

Firefox:

$ npx playwright-test benchmarks/to-string.js --runner benchmark --browser firefox 
✔ firefox set up
Uint8Arrays.toString x 1,662,562 ops/sec ±5.23% (60 runs sampled)
TextDecoder x 1,774,664 ops/sec ±7.01% (61 runs sampled)
utf8ReadFromCharCode x 1,324,124 ops/sec ±1.44% (64 runs sampled)
utf8ReadConcat x 769,512 ops/sec ±31.15% (32 runs sampled)
Fastest is TextDecoder

[codecov-commenter]

Codecov Report

Merging #32 (f3d52d7) into master (bd7147f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #32   +/-   ##
=======================================
  Coverage   96.76%   96.76%           
=======================================
  Files           8        8           
  Lines         247      247           
  Branches       49       49           
=======================================
  Hits          239      239           
  Misses          8        8           

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