Build co-authorship network

[macks22]

While the AMiner group already has a co-authorship network provided, it unfortunately does not allow for filtering by year ranges, which is a key feature of this library. Therefore it would be useful to implement tasks which construct such a network that inherit from YearFilterableTask. These could then also be combined with the term attributes from the repdoc corpus files and the ground truth from the venues in order to produce a more useful network.