Add "2D" Pareto points script

It performs a few optimization runs "in two dimensions", where the clock period is constrained to a max value, and power consumption is reduced as much as
possible while keeping within the specified clock period.
Area is recovered where possible, but it's NOT part of the optimization cost function.
Merge branch 'master' of m_github.com:miia/dumbledore
Add script to generate 3D pareto points (area as 3rd dimension), but DC doesn't like it