Added example-3 with Pinocchio.

Proposition of additional example using Pinocchio. Mostly includes a docker setup (copied from the tutorials of supaero2021), and a simple example with RNEA algorithm.

I wonder what is the best design pattern to avoid redundancy of declaration between boss and minions. I defined a TaskParameter structure to store these declaration. It seems somehow unelegant, but could not find better tonight. Opinion welcome.