Rust version

A Swift implementation of the nbase64 encoding scheme that supports various character sets for Base64 encoding.

For detailed information about the implementation, please refer to the documentation.

• Base64Extension - Core extension methods for Data and String types
• Base64CharacterSet - Predefined character sets for Base64 encoding

This library provides custom Base64 encoding and decoding capabilities with support for various character sets including emoji, Chinese characters, URL-safe, bcrypt, and crypt variants.