Bug#892664: dpkg: Please add support for zstd (Zstandard) compressed packages

[Rustam]

Hi Guillem,
Any news on the proposed patch?
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892664#49
Can it be merged already? ;)
Ubuntu packages are already using zstd compression. So tools like Mainline
don't work on Debian any more, see e.g.
https://github.com/bkw777/mainline/issues/121