Function create_hashes

pub fn create_hashes<'a>(
    _arrays: &[Arc<dyn Array>],
    _random_state: &RandomState,
    hashes_buffer: &'a mut Vec<u64>,
) -> Result<&'a mut Vec<u64>, DataFusionError>

Test version of create_hashes that produces the same value for all hashes (to test collisions)

See comments on hashes_buffer for more details