Added mc-intersite-projection and mc-intersite-projection-th.

[surrogate] modified the exponential decay switch function for scoring candidates for BayesVornoi case.

It provides a comparison of coefficients for AaPCE and BRRaPCE.

and improved CO2Benchmark by adding Momentplot for PCE postprocessing.

The new BayesVornoi methods starts with higher weights for exploration scheme and gradually increases the weight for the exploitation (Bayesian optDesign).