Add README to auotmated price tracking project

examples/automated_price_tracking/README.md

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+# Automated Price Tracking System
+
+A robust price tracking system that monitors product prices across e-commerce websites and notifies users of price changes through Discord.
+
+## Features
+
+- Automated price checking every 6 hours
+- Support for multiple e-commerce platforms through Firecrawl API
+- Discord notifications for price changes
+- Historical price data storage in PostgreSQL database
+- Interactive price history visualization with Streamlit
+
+## Setup
+
+1. Clone the repository
+2. Install dependencies:
+
+   ```bash
+   pip install -r requirements.txt
+   ```
+
+3. Configure environment variables:
+
+   ```bash
+   cp .env.example .env
+   ```
+
+   Then edit `.env` with your:
+   - Discord webhook URL
+   - Database credentials
+   - Firecrawl API key