Use snake case conversion result APIs

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src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi

@@ -142,8 +142,8 @@ class ConversionResult:
     def setStyle(self, newStyle): ...
 
 class ConversionResultShape:
-    def Serialize(self, place, arg3): ...
-    def Triangulate(self, *args): ...
+    def serialize(self, place, arg3): ...
+    def triangulate(self, *args): ...
     def __init__(self, *args, **kwargs): ...
     def add(self, arg2): ...
     def area(self): ...