Create comparator service
The central idea here is to create a service which will take a list of PypiPackage
and then calculates the overall points of each of package.
Comparable system
The comparable system here will rely on a kind of point ranking.
The points will represent how much a package has desirable features and characteristics. However, another comparable system may be chosen, for example, fixed-scale (0~10) grade, alphabetic-scale grade, etc