humanize for ipfs bitswap stat

[myself659]

License: MIT
Signed-off-by: Eric Wu myself659@163.com

[Stebalien]

To match our other commands, we should:

1. Add a --humanize flag.
2. Replace the sizes with the humanized sizes when humanizing.

[myself659]

my little suggest:

as shown in the above picture， I think this way is better with adding --humanize flag. and it has a better user experience.

[myself659]

and I think more users will like this type of cmd.

You can discuss it internally. Thx!

[Stebalien]

So, I'm just trying to be consistent with the rest of go-ipfs. Other commands (ls, du, etc.) provide humanize flags so ifconfig is really the outlier here. Actually, the replacement for ifconfig, ip, also uses a -human flag (ip -s -human addr).

[Stebalien]

Thanks!

[Stebalien]

cc @ipfs/wg-js-core