Removed runtime error raised in Problem for 3D cases and added condition to handle naming in core api

The error raised at runtime is removed to allow the creation of blowing elements in 3D computations. SparseLu is another direct solver that does not require IntelMKL

Ensures that the same DOF is pinned between two consecutive runs when using Neumann boundary condition

The getter is added in the Solver

Computation of blowing velocity residuals gradients and blowing contribution to mesh gradients

Use BLASTER (gitlab.uliege.be/am-dept/blaster) instead.

Improve switching function. Lower numerical viscosity. Lower threshold Mach for high speed clamp. Disable Netgen opti. Adapt tests.