Allowing material making from class constructor

[shimwell]

Description

It have just added a minimal set of extra options to the Material constructor to allow a material to made from the constructor.

This is useful to myself as I have a json representation of the material and going to a material object is easier with this addition. It also follows on some work @eepeterson and myself were doing trying to allow more classes to be construct-able from the constructor.

Fixes # (issue)

Checklist

• I have performed a self-review of my own code
• I have followed the style guidelines for Python source files (if applicable)
• I have made corresponding changes to the documentation (if applicable)
• I have added tests that prove my fix is effective or that my feature works (if applicable)

[shimwell]

edited this PR
I had originally added nuclides to the constructor but have now removed that as there are a few ways go about the addition of elements/nuclides and I would now like to do that in a follow up PR to keep this one as minimal as possible. I think this makes it easier to consider for merging.