Sharkbite

Updated PVWatts API call URL from nrel.gov to nlr.gov domain & related code files 🔗

Enhanced AI prompt, docs, and added the app flowchart diagram

Implemented new minor changes along with tests tests 🧪

Major app refactor changes along new features and AI 🧠

⚡Implemented the financial engine for the Sharkbite app v2.1