Proposal: Add Mired as Color Temperature sub-units for Blackbody node, and Normalize option

Indicate issues with Kelvin as Color Temperature units:

• Color Temperature isn't linear scale. Which make it hard to pick a desired Color.
• However, we are already adopted Kelvin for many fields and Kelvin is scientifically correct units represent Blackbody Color Temperature.

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My proposed solution:

• Add Mired (micro reciprocal degree) as sub-units for Blackbody node.
• An addition normalize option will be better.

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References:

• "White Balance is Broken" video explain by minutephysics

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Example of Blackbody use Mired units nodegroups I make: