[PRQ#46341] Merge Request for chirp-hg-py3

MarsSeed [1] filed a request to merge chirp-hg-py3 [2] into chirp-hg [3]: Source package is defunct and abandoned, and has a wrong name. The py3 branch is 7 months old and discontinued, because it has been upstreamed to master branch. The code has also been migrated to a Git repo on GitHub, but I think it is better to first merge the unneeded chirp-hg-py3 to chirp-hg, and then do the transition from -hg to -git package. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/chirp-hg-py3/ [3] https://aur.archlinux.org/pkgbase/chirp-hg/