Align Rust and C++ examples with JavaScript and split C++ into C++11/C++23 versions

[Copilot]

This PR addresses the request to align Rust and C++ examples with JavaScript functionality and split C++ into separate C++11 and C++23 versions for better language comparison.

Changes Made

🦀 Rust Examples Completion

Previously, many Rust sections were empty or incomplete. This PR adds comprehensive Rust implementations for all programming concepts, including:

• IIFE: Implemented using closures since Rust doesn't have traditional IIFE
• Classes: Used struct + impl blocks with traits for inheritance patterns
• JSON handling: Added serde-based serialization/deserialization examples
• Error handling: Demonstrated Rust's Result<T,E> pattern instead of exceptions
• Regular expressions: Added regex crate usage examples
• Time operations: Comprehensive time handling with std::time and chrono
• System variables: Process, environment, and filesystem operations

⚡ C++ Version Split

Replaced the single C++ implementation with two distinct versions showcasing language evolution:

C++11 Features:

• Auto type deduction and uniform initialization
• Lambda functions and range-based for loops
• Smart pointers and modern STL containers
• Enhanced enum classes

C++23 Features:

• Concepts and ranges library
• Format library and structured bindings
• Spaceship operator and enhanced enums
• Expected types and modern error handling

🌐 Enhanced Language Support

• Before: 4 languages (TypeScript, Golang, Rust*, C++*) with incomplete coverage
• After: 5 languages (TypeScript, Golang, Rust, C++11, C++23) with comprehensive examples

*Previously had many empty sections

Technical Implementation

• Updated scripts/define.js to define C++11 and C++23 as separate languages
• Created new data files: data.cpp11 and data.cpp23
• Removed old data.cpp file
• Enhanced data.rs with missing implementations
• Regenerated HTML comparison table and README.md

Screenshot

The comparison table now provides complete side-by-side examples across all 5 languages, making it easier for developers to understand syntax differences and similarities when working across multiple programming languages.

Verification

• ✅ All builds pass successfully
• ✅ HTML output generates correctly with all 5 languages
• ✅ README.md updated with comprehensive examples
• ✅ Interactive comparison table works as expected

This enhancement significantly improves the utility of the language comparison tool by providing complete, idiomatic examples for each supported programming language.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>更多语言实例</issue_title>
<issue_description>帮我把 rust 和 c++ 的示例对齐 JavaScript 。
另外吧 c++ 拆分成两种，c++11 和 c++23。
</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #4

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