Add Website Analyzer example application

[rorychatt]

Summary

Adds a working example application that demonstrates HtmlAgilityPack's HTML parsing capabilities through an interactive Website Analyzer.

What's Included

• Website Analyzer Application: An interactive web application built with Ivy Framework that allows users to:
  • Parse any website URL and extract HTML structure
  • Extract website data (title, meta descriptions, images, page structure, links)
  • Detect and categorize social media links
  • View structured results in an organized, expandable interface

Features Demonstrated

• HTML parsing using HtmlWeb and HtmlDocument
• XPath queries for element selection
• Data extraction (meta tags, images, links, structure)
• Error handling and validation
• Real-time parsing with loading indicators

Documentation

• Added comprehensive README in examples/ folder with setup instructions
• Updated main README with link to examples section
• Documented prerequisites (.NET 9.0 SDK) and usage

Technical Details

• Built with .NET 9.0
• Uses Ivy Framework for the web UI
• Demonstrates core HtmlAgilityPack functionality in a practical, real-world scenario

This example provides developers with a concrete reference implementation showing how to use HtmlAgilityPack for web scraping and HTML analysis tasks.