Create comprehensive wiki documentation for FluentDynamics QueryBuilder

[Copilot]

This PR creates a complete wiki documentation structure for the FluentDynamics QueryBuilder project, addressing the Turkish request "proje için wiki oluşturmama yardımcı olur musun?" (Can you help me create a wiki for the project?).

What's Added

The documentation is organized in a docs/ folder with full bilingual support (Turkish and English):

Documentation Structure

• Main Navigation: docs/README.md serves as the central hub with organized links to all documentation sections
• 18 comprehensive pages covering every aspect of the library
• 5,900+ lines of detailed documentation and code examples
• Cross-referenced navigation between related topics

Content Coverage

Getting Started

• Home pages with project overview and feature highlights
• Detailed installation guides with troubleshooting for common setup issues
• Quick start tutorials with practical first steps

User Guides

• Basic usage covering core concepts and fundamental operations
• Comprehensive API reference documenting all classes, methods, and extensions
• Real-world examples with 14+ practical scenarios including joins, async operations, and performance optimization

Support & Community

• FAQ addressing 20+ common questions and issues
• Troubleshooting guide covering installation, connection, query, and performance problems
• Contributing guide with coding standards, testing guidelines, and PR process

Key Features

Bilingual Support: Every page is available in both Turkish (docs/tr/) and English (docs/en/) to serve the international developer community.

Practical Examples: Over 100 code examples covering real-world scenarios like:

• Complex filtering with nested AND/OR conditions
• Multi-level joins across entities
• Async operations and pagination strategies
• Performance optimization techniques
• FetchXML integration

Developer-Friendly:

• Consistent Markdown formatting for easy GitHub Wiki transfer
• Code syntax highlighting and proper formatting
• Cross-references between related sections
• Troubleshooting scenarios with step-by-step solutions

Usage

The documentation can be used in multiple ways:

1. GitHub Wiki: Content can be directly copied to GitHub Wiki pages
2. Standalone Documentation: The docs/ folder works as comprehensive project documentation
3. Documentation Platforms: Compatible with Docusaurus, GitBook, or similar platforms

To explore the documentation, start with docs/README.md which provides organized navigation to all sections.

This addresses the need for comprehensive project documentation while maintaining the existing codebase unchanged and following minimal modification principles.

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