feat(benchmark): compare native with polyfill

[JonasBa]

Adds the benchmarks for the solution proposed in ecomfe#966. HashMap constructor is extended so it allows flipping between native/polyfilled backing data structure.

If someone that is not on M1 chip is reading this, please feel free to checkout the PR, run the benchmarks and post them in the comments

> node src/core/util.benchmark.js
cpu: Apple M1 Pro
runtime: node v18.3.0 (arm64-darwin)

benchmark      time (avg)             (min … max)       p75       p99      p995
------------------------------------------------- -----------------------------
• n=8
------------------------------------------------- -----------------------------
Native      92.59 ns/iter  (88.37 ns … 521.94 ns)  94.09 ns  116.1 ns 131.65 ns
Polyfill   140.06 ns/iter (137.22 ns … 171.45 ns) 139.03 ns 164.76 ns 170.73 ns

summary for n=8
  Native
   1.51x faster than Polyfill

• n=32
------------------------------------------------- -----------------------------
Native      298.8 ns/iter    (292 ns … 649.44 ns) 294.09 ns 630.26 ns 649.44 ns
Polyfill     1.17 µs/iter     (1.15 µs … 1.19 µs)   1.17 µs   1.19 µs   1.19 µs

summary for n=32
  Native
   3.9x faster than Polyfill

• n=64
------------------------------------------------- -----------------------------
Native     558.55 ns/iter (554.65 ns … 581.92 ns)  558.3 ns 580.21 ns 581.92 ns
Polyfill      2.4 µs/iter     (2.38 µs … 2.43 µs)   2.41 µs   2.43 µs   2.43 µs

summary for n=64
  Native
   4.3x faster than Polyfill

• n=128
------------------------------------------------- -----------------------------
Native       1.09 µs/iter     (1.08 µs … 1.13 µs)   1.09 µs   1.13 µs   1.13 µs
Polyfill      4.8 µs/iter     (4.76 µs … 4.84 µs)   4.81 µs   4.84 µs   4.84 µs

summary for n=128
  Native
   4.41x faster than Polyfill

• n=1024
------------------------------------------------- -----------------------------
Native       8.47 µs/iter     (8.46 µs … 8.57 µs)   8.47 µs   8.57 µs   8.57 µs
Polyfill    43.66 µs/iter  (42.83 µs … 236.92 µs)  43.54 µs  46.92 µs  48.67 µs

summary for n=1024
  Native
   5.15x faster than Polyfill

• n=8192
------------------------------------------------- -----------------------------
Native      68.23 µs/iter    (67.5 µs … 93.42 µs)  68.25 µs  72.46 µs  73.46 µs
Polyfill   771.05 µs/iter   (752.29 µs … 1.06 ms) 772.42 µs 871.79 µs 897.46 µs

summary for n=8192
  Native
   11.3x faster than Polyfill

• n=200000
------------------------------------------------- -----------------------------
Native       1.66 ms/iter     (1.64 ms … 1.71 ms)   1.66 ms    1.7 ms    1.7 ms
Polyfill    28.46 ms/iter    (28.15 ms … 29.6 ms)  28.51 ms   29.6 ms   29.6 ms

summary for n=200000
  Native
   17.17x faster than Polyfill