Re-wrap Thermochromic window model properly

[evanweaver]

Edit by @jmarrec on 2025-06-10 (empty message before):

The ThermochromicGlazing class we have is useless. because it tries to wrap this (emphasis mine)

OS:WindowMaterial:GlazingGroup:Thermochromic,
       \memo thermochromic glass at different temperatures
       \extensible:2
       \min-fields 4
  A1, \field Handle
       \type handle
       \required-field
  A2, \field Name
       \type alpha
       \required-field
       \reference MaterialNames
       \reference GlazingMaterialNames
  N1, \field Optical Data Temperature
       \type real
       \required-field
+      \begin-extensible
       \units C
       \ip-units F
  A3; \field Window Material Glazing Name
       \type object-list
       \required-field
       \object-list GlazingMaterialNames

So there are two extensible groups, but the class itself only has a single getter/setter pair for Optional Data Temperature and does not handle extensible groups at all, nor any Window Material Glazing Name

[evanweaver]

https://docs.google.com/document/d/1FZaHTw_I_qkzKQmtsfK0c6CylMvtR-5x4V4sCU9SjXQ/edit#heading=h.24cfythh6riu

Widget to display extensible groups name and temp. GetExtensibleGroup(0).getFoo()

[tijcolem]

Going to close this issue out due to inactivity. We can re-open if this is still relevant.