Addition of the FpTPxpc state definition with required testing

[tannerpolley]

Fixes

Adds the state definition FpTPxpc with required testing

Summary/Motivation:

There were cases where the FpcTP state definition was failing with Modular Properties

Changes proposed in this PR:

• Also adds bounds for phase equilibrium variables in general_property and smooth_VLE

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[codecov]

Codecov Report

❌ Patch coverage is 91.11111% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.48%. Comparing base (8f96b37) to head (1569c0c).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
...es/modular_properties/state_definitions/FpTPxpc.py	90.90%	10 Missing and 5 partials ⚠️
...erties/modular_properties/base/generic_property.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1710      +/-   ##
==========================================
+ Coverage   77.45%   77.48%   +0.02%     
==========================================
  Files         395      397       +2     
  Lines       64792    64992     +200     
  Branches    10902    10931      +29     
==========================================
+ Hits        50186    50357     +171     
- Misses      12095    12117      +22     
- Partials     2511     2518       +7     

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[dallan-keylogic]

In general, this looks good. There are a few minor changes that are necessary. However, in addition to the old-style calculate_scaling_factors method, you should include a new style scaler object. The other state definitions now have scaler objects that you can use as an example.

[tannerpolley]

Resolved comments made by Doug