fix(io): Improve readDelims() performance

[keroxp]

• fix bufio.readLines is pathologically slow for very long lines #803
• After short research, I found that problem comes from Buffer itself.
• Stopped using Buffer and introduced BytesList that manage multiple Uint8Array like one single Uint8Array.
• This change has significant performance improvements against main branch especially for a big file.

Improvements

v2 (de049d6)

Size	main (sec)	this PR (sec)
1kb	0.001	0.0006
10kb	0.002	0.002
100kb	0.008	0.005
1mb	0.467	0.062
10mb	46.962	0.330
100mb	N/A (over 45min)	3.407

v1 (59b3c76)

Size	main (sec)	this PR (sec)
1kb	0.001	0.002
10kb	0.002	0.004
100kb	0.008	0.01
1mb	0.467	0.1
10mb	46.962	1.295
100mb	N/A (over 45min)	15.791

[CLAassistant]

All committers have signed the CLA.

[ry]

shift 100?

[keroxp]

It's simply ordinal number.

[keroxp]

@ry Got more improvements by using iterator.

[ry]

LGTM