Implement entropy #218
Description
Implement entropy units and physical quantities:
- PhQ::Unit::Entropy (J/K)
- PhQ::Entropy
- PhQ::Unit::SpecificEntropy (J/K/kg)
- PhQ::SpecificEntropy
- PhQ::Unit::MolarEntropy (J/K/mol)
- PhQ::MolarEntropy
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Implement entropy units and physical quantities: