Function serialize_batch 

pub fn serialize_batch<T>(items: &[T]) -> Result<Vec<AlignedVec>, Error>
where
    T: for<'a> RkyvSerialize<Strategy<Serializer<AlignedVec, ArenaHandle<'a>, Share>, Error>>,

Serialize multiple values using RKYV format

Uses iterator collect - identical to RKYV naive loop.