Add debian/*.install files to avoid the need to override Debian's dh_auto_install or other debhelper rules. This also provides a cleaner way to install miscellaneous files (e.g. config examples and systemd unit files) and simplifies maintenance of the packaging.
Drop osmopy/twisted_ipa.py and scripts/{ctrl2cgi.py,soap.py}
scripts/{ctrl2cgi.py,soap.py} have been deprecated and scheduled for removal back in 2019. These scripts have been replaced by scripts/osmo_trap2cgi.py, which no longer needs Twisted.
Change-Id: I848f60270dd683a56f56117c328d9961ac678d4b Related: 684388f ("Add initial version of asyncio trap2cgi script") Related: 7230f68 ("Mark soap.py as deprecated")
