Add missing EnvState features

[jcurtis2]

Adding various EnvState features:

• Longitude
• Latitude
• Altitude
• env_state_ppb_to_conc
• env_state_conc_to_ppb
• env_state_air_molar_dens
• env_state_sat_vapor_pressure

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.04%. Comparing base (1490a37) to head (bb1581b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #462      +/-   ##
==========================================
+ Coverage   90.81%   91.04%   +0.23%     
==========================================
  Files          55       55              
  Lines        2569     2636      +67     
  Branches      144      144              
==========================================
+ Hits         2333     2400      +67     
  Misses        163      163              
  Partials       73       73              

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[Griger5]

Looks good. It would be nice to have a more automatic way of generating simple bindings, as right now they are very copy-and-paste like