added serpent temperature

[shimwell]

This PR will address #69 which mentions lack of temperature support in the serpent and openmc materials

ToDo

• [x] Serpent materials tmp card addition

• [x] OpenMC material tmp setting

• [x] Tests for serpent

• [x] Tests for OpenMC

[makeclean]

Not to derail the train, would it not make more sense to put temperature on a cell rather than a material?

[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (develop@024b7b7). Click here to learn what that means. The diff coverage is 92.59%.

@@            Coverage Diff             @@
##             develop     #101   +/-   ##
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  Coverage           ?   94.34%           
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  Files              ?        3           
  Lines              ?      548           
  Branches           ?        0           
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  Hits               ?      517           
  Misses             ?       31           
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Impacted Files	Coverage Δ
neutronics_material_maker/mutlimaterial.py	93.57% <91.30%> (ø)
neutronics_material_maker/material.py	94.10% <100.00%> (ø)
neutronics_material_maker/utils.py	96.38% <100.00%> (ø)

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[shimwell]

Not to derail the train, would it not make more sense to put temperature on a cell rather than a material?

Just for anyone reading this, chatted with Andy offline. In the end it is sometimes better to have temperatures on cells (which this package can't help with) and sometimes better to have temperatures on materials (which this package can help with). Going ahead with this feature to help in the situations where users want temperatures on the materials.