Returns the step in milliseconds for a given candle interval. For example, for "15m" interval, it returns 900000 (15 * 60 * 1000).
Candle interval (e.g., "1m", "15m", "1h")
Step in milliseconds corresponding to the interval
Returns the step in milliseconds for a given candle interval. For example, for "15m" interval, it returns 900000 (15 * 60 * 1000).