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.
This commit refactors the message editor code by introducing separate table flags for the message table and dictionary table. The message table now uses the kMessageTableFlags, which includes the Hideable, Borders, and Resizable flags. Similarly, the dictionary table now uses the kDictTableFlags, which includes the Borders and Resizable flags.
Additionally, the commit adds two new constants to the message_editor.h file: kFontGfxMessageSize with a value of 128 and kFontGfxMessageDepth with a value of 8. These constants are used in the message_editor.cc file to specify the size and depth of the font graphics data.
No functional changes are made in this commit.
