Obtaining Model Dimensions and Evaluation Point Values in 2D and 3D Models

[3Faker3]

Currently, for a two-dimensional square region, we can directly obtain the model's maximum depth and the depth of the current evaluation point using functions like model.max_depth and get_geometry_model().depth(in.position[i]). However, we do not have a straightforward method to obtain the model's width at the current evaluation point. Additionally, for a 3D box, we also need to get the model's width and the height of the current evaluation point.
（https://aspect.geodynamics.org/doc/doxygen/classaspect_1_1GeometryModel_1_1Interface.html#acaf107c6a056f0eb6cc4b250b110e416）