Documentation: Add integration example for Chainlink CCIP with Python scripts

Description
Add a comprehensive Python integration example for Chainlink CCIP (Cross-Chain Interoperability Protocol) to help developers quickly understand and implement CCIP functionality from Python environments.

Motivation
Many Web3 developers, especially those working with data science, backend systems, or automation tools, primarily use Python. Currently, the documentation and examples for Chainlink CCIP are heavily focused on Solidity and JavaScript/TypeScript implementations. This creates a barrier for Python developers who want to leverage CCIP for cross-chain operations.

Justification
A step-by-step Python integration guide would:

• Lower the entry barrier for Python developers entering the Web3 space
• Expand the Chainlink ecosystem by making CCIP more accessible to data scientists and backend engineers
• Provide practical examples for common use cases like querying CCIP data and initiating cross-chain asset transfers
• Complement existing documentation by covering the full development workflow from a Python perspective

The guide should include:

• Setting up a Python development environment for CCIP interactions
• Basic CCIP operations (data queries, monitoring cross-chain messages)
• Example code for initiating asset transfers via CCIP
• Best practices for error handling and transaction management
• Integration patterns with popular Python Web3 libraries (web3.py, eth-brownie, etc.)

Additional Information
Similar documentation improvements in other blockchain projects have significantly increased developer adoption. Examples that would benefit many developers include:

• Python scripts for reading CCIP Router contract data
• Sending cross-chain messages using Python and web3.py
• Monitoring CCIP transaction status programmatically
• Integration examples with popular Python frameworks (Flask, Django, FastAPI)

The issue does not identify a documentation file, existing example, test, or entry point. First locate the current CCIP documentation and Solidity or JavaScript examples, then determine where a Python guide belongs. Done means the guide covers setup, queries, monitoring, transfers, error handling, transaction management, and the requested Python Web3 integrations.