Function chunked_decode 

pub fn chunked_decode(
    decoder: &EvmDecoder,
    logs: &[RawEvent],
    registry: &dyn SchemaRegistry,
    chunk_size: usize,
) -> (Vec<DecodedEvent>, Vec<(usize, DecodeError)>)

Chunk logs into slices of at most chunk_size and decode each chunk in parallel. Returns a flat list of successes and errors.