Support refinement of 1D meshes (non-uniform) and quadrilateral/hexahedral cell meshes (uniform).

[jorgensd]

Describe new/missing feature

Currently, we only support mesh refinement on triangular and tetrahedral meshes.
We should aim to support:

• 1D (non-uniform) refinement of intervals
• 2D (uniform) refinement of quadrilatral meshes
• 3D (uniform) refinement of hexahedral meshes

Suggestion user interface

No response

[schnellerhase]

1D fixed in #3314

[chrisrichardson]

See PR #3756 which also refines hexahedral meshes and quadrilateral meshes.
Further work is required for higher-order geometry meshes.