Add comprehensive README.md file for Car Speed Detector project

[Copilot]

This PR adds a complete README.md file to document the Car Speed Detector project, addressing the requirement to create and add a readme file for this repository.

What's Added

The README.md file provides comprehensive documentation including:

📋 Project Overview

• Clear description of the car speed detection system using YOLOv8
• Key features and capabilities overview

🚀 Getting Started

• Installation requirements and dependencies
• Step-by-step setup instructions
• Basic usage examples

⚙️ Configuration

• Detailed explanation of all configurable parameters in config.py
• Speed detection settings, file paths, and detection thresholds
• Customization options for different use cases

📁 Project Structure

• Complete file structure documentation
• Purpose and description of each component
• Input/output directory organization

🔧 Technical Details

• How the speed detection algorithm works
• Explanation of the detection process and calculations
• Output format descriptions

🛠️ Troubleshooting

• Common issues and their solutions
• Dependencies troubleshooting
• Performance optimization tips

🤝 Contributing

• Guidelines for contributors
• Development workflow

Usage Example

The README enables users to quickly get started:

# Clone and setup
git clone https://github.com/techieworld2/Car_Speed_Detector.git
cd Car_Speed_Detector
pip install ultralytics opencv-python

# Run detection
python main.py

Validation

• ✅ All code examples and configurations tested
• ✅ Dependencies verified to work correctly
• ✅ File paths and structure accurately documented
• ✅ Installation instructions validated

This documentation makes the project accessible to new users and provides clear guidance for setup, usage, and customization of the car speed detection system.

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