Release v0.3.0

What's new

• Add dummy usage of enum constants to prevent linter warnings
• Improve README documentation for naming conventions and parameters
• Fix go:generate examples in README to include @latest tag
• Add Go 1.23 iterator support
• Add support to get the enum value by the constant int value
• Fix handling of repeated constant values in enum declarations
• Add support for explicit enum values instead of assuming sequential iota values
• Update dependencies
• Improve file permission handling