Use atomvm_packbeam instead of built-in C packbeam

[pguyot]

Kept the remove lines for release avm builds.
Added -p for runnables to prune some module (if any).
Install packbeam escript as bin/packbeam

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

[UncleGrumpy]

This is a nice improvement, and should simply maintenance - focusing our efforts on a single implementation of packbeam.

This should probably include a mention that it supersedes #1429.