Function parse_order_book_details_instruments 

pub fn parse_order_book_details_instruments(
    registry: &MarketRegistry,
    perp_details: &[LighterPerpOrderBookDetail],
    spot_details: &[LighterSpotOrderBookDetail],
    ts_init: UnixNanos,
) -> Result<Vec<InstrumentAny>>

Parses Lighter order book metadata into Nautilus instruments and registers their market ids.

Errors

Returns an error if an instrument definition cannot be converted.