Point contributor to projects based on previous experience

[nikhita]

I'm submitting a ...

• feature request

Copying from #175 (comment):

I am not sure how feasible/scalable this is here but for Kubernetes, we are
looking to build something called as "contributor journeys". It means the
person selects whatever topics he is knowledgeable about and we show him
the most appropriate projects/repos where he can contribute.

I also understand that building this is going to take sufficient
time and effort so even if we decide to do this, I don't really expect it
to be done anytime soon.

[nikhita]

/cc @vaibhavsingh97