Bug#1023406: Adding loong64 architecture to dpkg

[张丹丹]

Package: dpkgDear Maintainer,According to the result of disscussion from 
debian-d...@lists.debian.org(https://lists.debian.org/debian-dpkg/2022/11/msg00001.html),
 guil...@debian.org, hel...@subdivi.de, *@loongson.cn.Question: should add 
loong64 architecture to dpkg package? Thanks!