Move import-debian-package to apertis-infrastructure

Background

The tool import-debian-package is only used manually (not part of CI pipelines) so it makes sense to move it to https://gitlab.apertis.org/infrastructure/apertis-infrastructure/ which is the project that hosts release/rebase tools.

Outcomes

TBD

Management data

This section is for management only, it should be the last one in the description.

/cc @em @balasubramanian @sudarshan @wlozano

Phabricator link: https://phabricator.apertis.org/T11008