Function spawn_actor_raw 

pub fn spawn_actor_raw(
    world: UObjectHandle,
    class: UClassHandle,
    transform_buf: &[u8],
    owner: UObjectHandle,
) -> UikaResult<UObjectHandle>

Spawn an actor in the world.

• world: the UWorld handle
• class: the UClass of the actor to spawn
• transform_buf: raw bytes of an FTransform struct
• owner: optional owning actor (null handle for none)