Profile code to assess inefficiencies

[jardinetsouffleton]

Large sections of the code could be optimized and while developers having some experience with SeaPearl know intuitively which parts require the most performance tuning, having a detailed view of this would be very good. To that end, it would be great to profile the code and write a small report highlighting the areas needing the most love.
Since they contain the bulk of the constraints and variables, we should start by profiling all examples in SeaPearlZoo. If we see the need to add new tests, we could add them to a new profiling issue.