Overhaul LVD editor and refactor reading/writing

[ThatNintendoNerd]

Restructures LVD object classes and their fields based on recent work to lvd-rs as well as expanding on the functionality of the application's LVD editor.

• Improved accuracy of LVD file reading.
  • Implemented versioning of fields.
  • Improve handling of uninitialized string buffers.
• Improved accuracy of classifying an edge as a floor, wall, or ceiling.
• Added missing edge materials from Smash Ultimate
• Added more toggles for edge attributes.
• Added previewing of dynamic offsets (previously known as "start position").
• Added all supported object types to tree view, no longer requiring double-clicking in viewport for certain object types.
• Recolored all edge materials to better represent their physical representation.
• General maintenance to code quality and consistency.