Function orderbook_deltas_new 

#[unsafe(no_mangle)]
pub extern "C" fn orderbook_deltas_new(
    instrument_id: InstrumentId,
    deltas: &CVec,
) -> OrderBookDeltas_API

Creates a new OrderBookDeltas_API instance from a CVec of OrderBookDelta.

Safety

• The deltas must be a valid pointer to a CVec containing OrderBookDelta objects.
• This function clones the data pointed to by deltas into Rust-managed memory, then forgets the original Vec to prevent Rust from auto-deallocating it.
• The caller is responsible for managing the memory of deltas (including its deallocation) to avoid memory leaks.