Add comprehensive C++ sorting algorithms collection

[Copilot]

Implements a complete reference file containing all classic sorting algorithms in C++ with bilingual documentation (Chinese/English).

Algorithms Included

• Comparison-based: Bubble, Selection, Insertion, Shell, Merge, Quick, Heap
• Non-comparison: Counting, Radix, Bucket

Features

• Time/space complexity annotations for each algorithm
• Stability indicators
• Self-contained test harness in main()
• Summary complexity table

// Example usage
vector<int> arr = {64, 34, 25, 12, 22, 11, 90};
quickSort(arr);  // or any other algorithm

All algorithms verified against test cases.

Original prompt

帮我写一个所有数据结构与算法中的排序的C++的 文件，然后里面包含所有的排序算法，只要是经典的就行

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