CI: optimize packaging tests

Close #541 (closed).

scripts/make-archive.sh

-#!/bin/sh -e
-# SPDX-License-Identifier: GPL-3.0-or-later
-# Create a distribution tarball, like 'make dist' from autotools.
-cd "$(git rev-parse --show-toplevel)"
-ver="$(git describe | sed 's/^v//')"
-test 0 -ne $(git status --porcelain | wc -l) && \
-	echo "Git working tree is dirty, make it clean first" && \
-	exit 1
-git submodule status --recursive | grep -q '^[^ ]' && \
-	echo "Git submodules are dirty, run: git submodule update --recursive --init" && \
-	exit 2
-
-# 'git ls-files --recurse-submodules' works only if modules are initialized
-name="knot-resolver-$ver"
-tar caf "$name.tar.xz" --no-recursion --transform "s|^|$name/|" -- $(git ls-files --recurse-submodules)
-echo "$name.tar.xz"