Enhance ConfigMapper with resetToDefaults method and improve validation in item conversion

[bentahsin]

No description provided.

[Copilot]

Pull request overview

This PR enhances the ConfigMapper with a new resetToDefaults method and improves validation throughout the configuration system. Key improvements include better type safety in converters, enhanced enum handling with case-insensitive matching, and support for additional ItemStack metadata types (leather armor colors, skull owners, potions).

• Added resetToDefaults() method to ConfigMapper for resetting config instances to default values
• Improved validation and type conversion throughout list and map handling with safer casting
• Enhanced converter implementations with better null handling and support for decimal time values

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
ConfigMapper.java	Added resetToDefaults method, refactored validation into isValid helper, improved enum/primitive conversion with case-insensitive matching and Character support
Configuration.java	Integrated resetToDefaults call during config initialization
Cuboid.java	Removed automatic coordinate normalization from constructors, added null check for getCenter(), exposed getters for all fields
TimeConverter.java	Added support for decimal time values (e.g., "1.5h"), removed comments
LocationConverter.java	Enhanced null safety with world validation and warning messages
ItemStackConverter.java	Improved type safety with instanceof checks, added support for leather armor colors, skull owners, and potion metadata

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