Support wedge and pyramid elements

Wedge (https://github.com/Ferrite-FEM/Ferrite.jl/pull/581) and pyramids (https://github.com/Ferrite-FEM/Ferrite.jl/pull/623) are supported by Ferrite.

Need to also update the example with custom elements. The easiest and most useful here would probably be to include interface/cohesive elements following `FerriteInterfaceElements.jl`.

### Notes for implementation
Abaqus node ordering is as follows:

Codes for stress elements
- Linear wedge (6-noded): C3D6, C3D6H
- Quadratic wedge (15-nodes): C3D15, C3D15H
- Pyramid (5-noded): C3D5, C3D5H (Not possible to generate with Abaqus CAE, but good to support in case other mesh generators are used to output abaqus .inp files)