Description

Added an examples/ directory containing sample Python scripts demonstrating how to integrate various edge AI and machine learning tasks with the EdgeBrain platform via MQTT. The following examples were added:

1. image_classification.py - Simulates a Raspberry Pi running an image classification model.
2. object_detection.py - Simulates a webcam running an object detection model (e.g., YOLO) to count persons.
3. sentiment_analysis.py - Demonstrates text-based AI integration by performing sentiment analysis and publishing the score.
   Also included an examples/README.md to guide users on how to run these scripts.

Fixes #7

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactor (no functional changes)

Testing

• docker compose up --build succeeds
• Dashboard loads at http://localhost:3000
• API returns data at http://localhost:8000/api/v1/devices
• New/modified code is tested (Reviewed the generated example scripts to ensure they use correct paho-mqtt syntax and match EdgeBrain's expected payload structure).

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code where necessary
• I have updated the documentation if needed
• My changes generate no new warnings