Add dimensionality reduction example for 2D meltpool simulation to combined module

[grmnptr]

Motivation

We need an interesting problem as an example for dimansionality reduction, this could be a good stepping stone for testing dimensionality reduction techniques (combined with ROMs).

Design

Add example to combined module.

Impact

Useful presentation of current workflow and good starting point with other dimensionality reduction and reduced-order modeling techniques.

[lindsayad]

which melt pool sim?

[grmnptr]

2D FE from the NS module. I'll change the material to 316L, alter some laser parameters and modify the domain for longer scans.

[lindsayad]

Sounds awesome!