New greenbone-feed-sync script

Hi everyone,

with our ongoing effort to improve things for the community I am happy to announce the first release of the new greenbone-feed-sync script. It has been rewritten from scratch in Python and will replace the current shell scripts greenbone-feed-sync shipped with gvmd and greenbone-nvt-sync shipped with openvas-scanner. The new script is much more flexible, it is easier to maintain and changes can be provided without new gvmd and/or openvas-scanner releases.

The new script is a drop in replacement and can be installed side by side to the old ones. Installation instructions can be found at the README of the GitHub repository.

It is intended to remove the old scripts in a new bugfix releases of gvmd and openvas-scanner after the community got their hands on it for a while.