Bug#1051125: RFS: a2d/2.0.0-1 [ITP] -- APRS to DAPNET portal

[Yogu NY3W <kd8mbd@gmail.com>]

I've made some significant improvements to the project's packaging process
and source structure to ensure that it aligns better with standard Python
practices and Debian packaging guidelines.

Summary of the key changes and updates:
I've reorganized the project's directory structure to align it more closely
with common Python project conventions, even though I understand that it
may not entirely conform to the typical Python project. This includes a
well-organized layout with modules, tests, and a setup.py file for better
maintainability.

I've incorporated dh-python into the packaging process, which streamlines
Python-related tasks and management, making the project more compatible
with the Debian packaging system. I've automated the installation process
using dh_auto_install to ensure that the project installs correctly within
the Debian package.

As suggested, I've revised the d/changelog file.
I addressed issues related to conffile to ensure that configuration files
are correctly managed during installation and upgrades. Tested them as well