conduit util to coalesce related vf fields into a matset and matset values

[cyrush]

[JustinPrivitera]

What do you mean by this?

[cyrush]

place holder for further discussion

[JustinPrivitera]

test data here: visit-dav/visit#18730

[JustinPrivitera]

we have fields that define per-material volume fractions
and fields that define per-material matset values (think like density_mat1, density_mat2, etc.)

[JustinPrivitera]

we want a conduit util that can consume these and produce a matset and produce fields with matset_values

[JustinPrivitera]

Open question on how we present this data to conduit. Look at what Brad did in the Blueprint plugin to get a better understanding.

Should we pass a list of fields? Pass a filter string and all the fields?

[JustinPrivitera]

This will be helpful for Ascent integration work Nicole is working on.