Fix building for Noble, modernize packaging
- debian/: upgrade debhelper compat to 13
- default_daemon_config: workaround -Wmaybe-uninitialized from lambda
- d/repowerd.install: update systemd system unit install location
- d/{control,copyright}: update metadata
- debian/: make it possible to build against Debian testing
- debian/: adapt some packaging from Debian where appropriate
Edited by Ratchanan Srirattanamet