establish neqsim simulations using input config files (yaml/json)

[EvenSol]

Is your feature request related to a problem? Please describe.
It should be possible to set up process calculations by using input text files (yaml/json)

Describe the solution you'd like
Establish a standard way to create fluids anf process calculations via text input files.

[EvenSol]

example of YAML format:

FLUID:

• NAME: <name of fluid model, for reference>
  TYPE: FLUID
  FLUID_MODEL_TYPE: PREDEFINED
  EOS_MODEL:

PROCESS:

• NAME: <name of fluid model, for reference>
  UNITOPERATIONS:
  STREAM:
  TYPE:
  FLUID:

   SEPARATOR:
      NAME:....
      FEEDSTREAM:
      GAS: 
      LIQUID: 
      
      ......