Add ZScreamCustomOverworld ASM v3 and integrate area size support

- Introduced ZScream Custom Overworld ASM to enhance customization of the ALTTP overworld, allowing users to modify various aspects such as palettes, backgrounds, and transitions.
- Updated OverworldEditor to include area size selection for v3 support, enabling users to choose between different area sizes (Small, Large, Wide, Tall).
- Enhanced OverworldMap to load area size information based on the applied ASM version, ensuring compatibility with expanded features.
- Implemented SaveAreaSizes method in Overworld to persist area size settings in the ROM, supporting the new customization capabilities.
- Refactored related classes and methods to accommodate the new area size logic and ensure seamless integration with existing functionalities.

src/app/zelda3/overworld/overworld.h

@@ -138,6 +138,7 @@ class Overworld {
   absl::Status SaveMap32Tiles();
 
   absl::Status SaveMapProperties();
+  absl::Status SaveAreaSizes();
 
   auto rom() const { return rom_; }
   auto mutable_rom() { return rom_; }