Force the split of regular boundary edges connecting ridge or non-manifold vertices

[Algiane]

⚠️ Not to be merged: user specific ask ⚠️

The current PR forces the splitting of "regular" surface edges connecting vertices along "feature" edges (ridges or non-manifold edges). See attached picture: The green nodes are inserted along the "regular" surface edges that connects nodes along ridges. Surface triangles and underlying tetrahedra are splitting accordingly.

[Algiane]

Specific demand of the Cerfacs for AVBP.