(Nu2) Scene Support

[Knuxfan24]

• [ ] Figure out what SPEC means in the context of a Nu2 Scene.
• [ ] Figure out what ALIB means in the context of a Nu2 Scene.
• [ ] Figure out what IABL means in the context of a Nu2 Scene.
• [ ] Reverse engineer the ALIB chunk.
• [ ] Reverse engineer the Xbox Texture Set.
• [ ] Reverse engineer the Xbox Geometry Set.
• [ ] Reverse engineer the PlayStation 2 Texture Set.
• [ ] Reverse engineer the PlayStation 2 Material Set.
• [ ] Reverse engineer the PlayStation 2 Geometry Set.
• [ ] Reverse engineer the PlayStation 2 SPEC Set.
• [ ] Reverse engineer the IABL chunk exclusive to the PlayStation 2 version.
• [ ] Implement a way to decompress and recompress the PlayStation 2 version's Rob Northen Compression scheme (https://segaretro.org/Rob_Northen_compression).
• [ ] Implement a way to save this format.
• [x] Implement a way to export this format's model and texture data.
• [ ] Implement a way to import a model to this format.