Added class MeshNodesToPoints for converting mesh nodes to geometric points for visualization.
[MeshGeoToolsLib] Fix calculation of search length.

In case of aquidistant meshes the expression sum_of_sqr - (sum*sum)/edge_cnt can get negative due to numerical calculation. The root of a negative value is not computable in real numbers.
Add assertion for searching nodes along a polyline algorithm.
[MGT] Remove unnecessary class.
[MGT] WIP