Updated MessageEditor, RoomEntrance, and Overworld classes to use WriteByte instead of Write for byte values. Refactored ROM class by removing Write and toint16 methods, moving constants, and updating operator[]. Modified Overworld methods to return absl::Status and handle errors. Updated Inventory and OverworldMap methods to use ReadWord instead of toint16.
- Removed `FindMatchingCharacter` declaration from `message_data.h`
- Added default values to `DictionaryEntry` and `MessageData` members
- Marked several methods in `DictionaryEntry`, `MessageData`, and `TextElement` as `const`
- Updated `TextElement` constructor to take `const std::string&`
- Added string constants for text descriptions in `TextElement`
- Updated `TextCommands` vector to use new string constants
- Declared new function `FindMatchingCommand`
- Included `<array>` header in `message_editor.h`
- Changed `width_array` in `MessageEditor` to `std::array` with default initialization
- Removed `list_of_texts_` and `all_dictionaries_` vectors from `MessageEditor`
- Added default values to `GameEntity` members
- Initialized `sheets` array in `PseudoVram`
- Initialized `map_parent_` and `all_tiles_types_` arrays in `Overworld`
Refactor the handling of graphics sheets by introducing a singleton class `GraphicsSheetManager`. This centralizes the management of graphics sheets, replacing direct access through the `Rom` object. Key changes include:
- Updated various methods across multiple classes to use `GraphicsSheetManager::GetInstance()` for accessing and manipulating graphics sheets.
- Introduced standalone functions `LoadLinkGraphics`, `LoadAllGraphicsData`, and `SaveAllGraphicsData` for loading and saving graphics data.
- Refactored the `Rom` class to remove methods and member variables related to graphics sheet management.
- Updated `OverworldEditor` to use `std::array` for `maps_bmp_` and added error handling for `std::bad_alloc` exceptions.
- Improved code modularity and error handling throughout the application.
