Ali

https://app.codecov.io/gh/gha3mi/forcad

The current `export_vtk_legacy` subroutine uses `convert="big_endian"`, which is non-standard and compiler-specific. Replace it with a portable alternative.

Improve the PyVista logic in the `show()` subroutines of the `nurbs_curve`, `nurbs_surface` and `nurbs_volume` modules to support scalar field visualization. This enables displaying results from example programs such as 2D...

Currently uses row-major layout. Example: ```fortran Tgc(i,:) = kron( & basis_bspline(Xt(i,2), knot2, nc(2), degree(2)), & basis_bspline(Xt(i,1), knot1, nc(1), degree(1)) ) ``` **Column-major layout would look like:** ```fortran Tgc(:,i) = kron(...