Add new UMR-EoS version

[EvenSol]

A new and updated version of UMR EoS will be added based on Akis work:

Preparations:

1. Use https://desktop.github.com/
2. Use Visual Studio Code (with Java extensions)

[EvenSol]

I created a branch and started added some files (I added a test to check implementation of model is ok): https://github.com/equinor/neqsim/tree/addEOS

I recommend to use tools such as :

1. Github for cooperation with code (you will need to get a guithub user)
2. Github desktop https://desktop.github.com/
3. Download Graal VM https://www.graalvm.org/
4. Download and install maven (https://maven.apache.org/)
5. Visual Studio Code (IDE) https://code.visualstudio.com/ - with java extensions (Debugger for Java, GraalVM, Java test runner, Maven for Java)