Add SuperTrapp methods

[EvenSol]

Is your feature request related to a problem? Please describe.
Would be nice to have accuracy viscosity and thermal conductivity calculation uing SUPETRAPP in NeqSim.
For natural gas and CO2/hydrogen this method is known to be very accurate.

Documentation of SuperTrapp method:
https://www.nist.gov/publications/documentation-and-assessment-transport-property-models-implemented-nist-refprop-version

https://app.knovel.com/web/view/pdf/show.v/rcid:kpPBPRFE02/cid:kt0115TEI2/viewerType:pdf//root_slug:1011-corresponding-states-viscosity-models/url_slug:corresponding-states?cid=kt0115TEI2

https://nvlpubs.nist.gov/nistpubs/Legacy/IR/nistir6650.pdf

Describe the solution you'd like
Be able to select SUPERTRAPP as viscosity/thermal conductivity method.

Describe alternatives you've considered
Not relevant

Additional context
We will add papers with mathematics to the issue.

[EvenSol]

The Properties of Gases and Liquids 5th Edition