An improved RWSTL::ReadFile() method + a draw-command returning the number of nodes and triangles for a MeshVS_Mesh object based on STL mesh data source.
An indexed map of points is replaced by a CellFilter of XYZ objects already implemented in BRepBuilderAPI.
Also, BRepBuilderAPI_VertexInspector became exported for TKTopAlgo library (Standard_EXPORT is added for the methods of this class).
Standard_EXPORT is removed for in-line methods of BRepBuilderAPI_VertexInspector
Test-case for issue #25405
Update of test-cases, according to new behavior
