[Performance] GetRootGameObjects improvements about zenject

[extrawurst]

Did you measure what impact that has on performance?

[svermeulen]

Are you saying that we don't need to use this code anymore?

                return Resources.FindObjectsOfTypeAll<GameObject>()
                    .Where(x => x.transform.parent == null
                            && x.GetComponent<ProjectContext>() == null
                            && x.scene == scene);

That would be great since that's hacky and less performant than scene.GetRootGameObjects. But according to the comment in ZenUtilInternal.GetRootGameObjects, it doesn't work when executed during Awake

[legoritma]

@svermeulen Yes exactly. I think this is the issue which is explained in the comment.https://issuetracker.unity3d.com/issues/scene-is-not-considered-loaded-when-awake-is-called

@extrawurst I wasn't remember the original ratios so tested again in our game on 2018.4.10 Editor.
Current method -> 317 KB GC, 3.95 ms
Suggested method -> 0.8 KB GC, 0.01 ms