I need a single-page Excel workbook that pulls live prices for the Nifty 50 index on the NSE. The sheet should call API and update live feed in excel updated every second auto-refresh. Please deliver: • A fully functioning .xlsx (or .xlsm) file with the live feed in place • Well-commented code showing where the API key or endpoint sits • A brief read-me explaining any setup steps (dependencies, refresh settings, etc.) If you’ve built something similar for NSE data before, that’s a plus—share a quick example or screenshot and we can get started right away.