Export Indicator Data to CSV (for AI/ML Models & Python Analysis)

Please expand the Chart Export function to include custom and built-in indicator values (e.g., VWAP, Volume Profile, Delta) alongside the standard OHLC price data.

Why it's important: Currently, exported CSV files only contain basic OHLC data. Exporting full indicator time-series is essential for quantitative analysis, backtesting in Python, and training custom AI trading bots.