ICP-based solver for nonlinear arithmetic (#5017)

ICP-based solver for nonlinear arithmetic (#5017)

This PR adds a new icp-based solver to be integrated into the nonlinear extension.
It is not meant to be used as a stand-alone ICP solver. It does not implement splits (only propagations) and implements a rather aggressive budget mechanism that aims to quickly stop propagation to allow other solvers to take over. Additionally, it enforces a maximum bit size to avoid divergence.