perf: Add Benchmark Suite to run benchmark continuously

[twada]

• [x] add @twada/benchmark-commits to run benchmarks on previous version and head
• [x] create benchmark suite and run

result

$ node bench.mjs
start preparation of 2 benchmarks
start npm install of v1.6.0
start npm install of master
finish npm install of v1.6.0
register benchmark of v1.6.0
finish npm install of master
register benchmark of master
finish preparation of 2 benchmarks
start suite of 2 benchmarks
finish benchmark of v1.6.0 x 135 ops/sec ±0.24% (87 runs sampled)
finish benchmark of master x 2,754 ops/sec ±2.10% (95 runs sampled)
finish suite: fastest is [master]
FINISHED
$ 

v2.0.0 is 20 times faster than v1.6.0 🎉