Use LJ published data for difficult tests

[SamTov]

What feature would you like to see added?
We can use data from the thesis linked below to test structure, thermal conductivity, and viscosity for our calculators.

https://www.hsu-hh.de/thermodynamik/wp-content/uploads/sites/741/2017/10/Dissertation-K.-Meier.pdf

Describe how this feature would improve the code
Would provide an adequate solution to our problem of solving for properties that are analytically not accessible.