Add comprehensive BenchmarkDotNet capabilities overview documentation - #2

This PR adds a comprehensive technical overview of BenchmarkDotNet capabilities to the repository as requested. The documentation covers all major aspects of the popular .NET benchmarking library.

What's Added

New File: BenchmarkDotNet-Overview.md

A complete technical reference document that includes:

Core Content Areas

• Performance Measurement Features: Micro-benchmarking, statistical analysis, cross-platform support
• Advanced Configuration Options: Job configuration, parameterized tests, memory profiling
• Built-in Analyzers: Runtime analyzers, code quality validators, platform-specific analyzers
• Recent Enhancements: Native AOT support, hardware counters integration, improved developer experience
• Practical Examples: Real-world code samples for algorithm testing, memory analysis, and runtime comparisons

Key Highlights

• Covers analyzers functionality (EnvironmentAnalyser, JitOptimizationsValidator, OutliersAnalyser, etc.)
• Documents recent changelog improvements and new features
• Addresses frequently asked questions about setup, performance optimization, and advanced scenarios
• Includes best practices for benchmark design and analysis
• Provides references to official BenchmarkDotNet documentation

Code Examples

The document includes practical C# code samples demonstrating:

[SimpleJob(RuntimeMoniker.Net60)]
[MemoryDiagnoser]
public class AlgorithmBenchmark
{
    [Params(100, 1000, 10000)]
    public int Size { get; set; }

    [Benchmark]
    public void BubbleSort() => /* implementation */
}

This documentation serves as a comprehensive reference for developers looking to understand BenchmarkDotNet's capabilities, from basic performance measurement to advanced analysis features. It consolidates information about the library's analyzers, recent enhancements, and answers common questions developers have when working with .NET performance benchmarking.

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.