refact: replace byValue with enums

[asmfstatoil]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 41.13%. Comparing base (0fe37d1) to head (38264f9).

Files with missing lines	Patch %	Lines
src/main/java/neqsim/thermo/phase/PhaseGE.java	50.00%	1 Missing ⚠️
...in/java/neqsim/thermo/phase/PhaseGEUnifacPSRK.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1254   +/-   ##
=========================================
  Coverage     41.13%   41.13%           
  Complexity     6030     6030           
=========================================
  Files           722      722           
  Lines         68334    68334           
  Branches       8162     8162           
=========================================
  Hits          28112    28112           
  Misses        38541    38541           
  Partials       1681     1681           

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[EvenSol]

Good update