- Add a 'common' symlink inside pve-rs/pmg-rs
- Have the `build/` target replace it with a dir and copy
`common/src` into it.
- Depend on perlmod-bin to generate the perl package files.
now pve-rs and pmg-rs can be built directly from within via
dpkg-buildpackage
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>