refactor: remove NetworkManager.Singleton dependencies, add additional instance tracking and notification when LogLevel.Developer#562

NoelStephensUnity merged 18 commits into

release/0.1.0Unity-Technologies/com.unity.netcode.gameobjects:release/0.1.0from

fix/rpcstartupshutdownUnity-Technologies/com.unity.netcode.gameobjects:fix/rpcstartupshutdownCopy head branch name to clipboard