Add Supply Chain AI Agent (Power & Energy) sample

[rohitsroch]

This PR introduces the Supply Chain AI Agent, a comprehensive multi-agent system built using the Google ADK framework.

Designed specifically for the Power & Energy sector, this agent automates supply chain optimization by orchestrating a team of specialized sub-agents. It synthesizes real-time market dynamics, weather impact analysis, internal operational data, and demand forecasts to provide actionable strategic recommendations.

Key Capabilities:

• Multi-Agent Architecture: Features a central orchestrator managing specialized agents for market analysis, operations, forecasting, and weather intelligence.
• Real-Time Optimization: Scans external news and market signals to identify risks.
• Operational Intelligence: Queries internal BigQuery databases using natural language to monitor generation capacity and inventory.
• Predictive Analytics: specific demand forecasting to anticipate peak load requirements.
• Visual Insights: Generates dynamic charts and visualizations to aid decision-making.

This sample serves as a robust, real-world blueprint for developers and enterprises demonstrating how to build sophisticated, domain-specific AI agents using Google ADK.