[Radar] - Basic functionality / plot

Referencing issue #982 
Should cover the first 5 points of that issue.

Note: branch targeted to radarPlot as a feature branch
Note: only one dataset can be added and while a dataset can have multiple datums, a single datum is the only tested behavior on my end.
let's just do default projector in constructor, until we decide on a general solution for all default projectors i think its fine to have another one. with the NSP refactor default projectors are not such an issue anymore.