Deploy data job to collect traffic data about VDK from Github API

[gabrielgeorgiev1]

What is the feature request? What problem does it solve?
The Github Insights menu is limited in the data that it presents - for example, only the last month's worth of contributions is considered when listing how many commits each user has made. This issue has been partially dealt with in #523, however the Grimoirelab suite doesn't collect any of the data shown in the Traffic section of the Insights dashboard (chaoss/grimoirelab-perceval#572). We'd still like to collect this data, which is available through the Github API (https://docs.github.com/en/rest/reference/repos#traffic).

Suggested solution
A data job should be created and deployed, which queries the Github API about the necessary data on a weekly basis and stores it in some database.