Add BSTHeapSTLVector and model COBJ recipe filters as typed keyword arrays.

[ozooma10]

add BSTHeapSTLVector container for Starfield heap-backed vector fields, uses it to model loaded/runtime typed keyword arrays, and update BGSConstructibleObject / BGSCraftableForm field layout names.

• add RE::BSTHeapSTLVector as a build-stable model for engine fields stored as begin / end / capacityEnd
• rework BGSTypedKeywordValueArray to inherit from BSTHeapSTLVector<BGSKeyword*>
• rename BGSConstructibleObject’s category field to recipeFilters
• add a few more suspected field names on constructable object