[ITP] pigz 2.8

[Ihor via Cygwin-apps]

Hi! I'd like to propose a new package: pigz, multithreaded gzip archiver.

Some notes regarding it:

- It's already present in most distros (Debian, Ubuntu, ...)
- zlib License
- No changes to sources are required. It's built fine on cygwin as-is.

Links:

- Original: https://zlib.net/pigz/
- cygport​ file + built package: https://file.io/KPRA9oa0BOj7

Let me know please what should I do next to proceed forward with publishing the 
package.

King regards,
Ihor