feat: introduce enum type PhysicalPropertyModel

[asmfstatoil]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 53.84615% with 18 lines in your changes missing coverage. Please review.

Project coverage is 37.20%. Comparing base (5cc8177) to head (d1396f7).

Files with missing lines	Patch %	Lines
...ain/java/neqsim/thermo/system/SystemInterface.java	0.00%	5 Missing ⚠️
.../physicalpropertysystem/PhysicalPropertyModel.java	73.33%	2 Missing and 2 partials ⚠️
src/main/java/neqsim/thermo/phase/Phase.java	76.92%	3 Missing ⚠️
...im/physicalproperties/PhysicalPropertyHandler.java	0.00%	1 Missing and 1 partial ⚠️
.../main/java/neqsim/thermo/phase/PhaseInterface.java	0.00%	2 Missing ⚠️
...hasereactorflownode/TwoPhasePackedBedFlowNode.java	0.00%	1 Missing ⚠️
...hasepipeflowsystem/TwoPhasePipeFlowSystemReac.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1148   +/-   ##
=========================================
  Coverage     37.19%   37.20%           
- Complexity     5706     5714    +8     
=========================================
  Files           714      715    +1     
  Lines         70720    70739   +19     
  Branches       8122     8125    +3     
=========================================
+ Hits          26302    26315   +13     
- Misses        42799    42803    +4     
- Partials       1619     1621    +2     

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[EvenSol]

this look like a good improvement of clarity of code.

[asmfstatoil]

This seems to work now. The following functions have been renamed to clarify what is happening under the hood. No changes has been made for SystemInterace.

getPhysicalPropertyType -> getPhysicalPropertyModel