Simone Guggiari

feat: allows `NetworkObjectReference`s and `NetworkBehaviourReference`s to be null

1

Allows `NetworkObjectReference`s and `NetworkBehaviourReference`s to be null This PR implements this request: https://forum.unity.com/threads/networkobjectreference-cant-be-null-though-that-seems-like-a-perfectly-valid-use-case.1373304/ which has its own issues https://github.com/Unity-Technologies/com.unity.netcode.gameobjects/issues/2346 and https://github.com/Unity-Technologies/com.unity.netcode.gameobjects/issues/1693 This PR adds support for `NetworkObjectReference` and `NetworkBehaviourReference` to...