breaking: NetworkBehaviour.SyncVar/GameObject/NetworkIdentity/Network…

…BehaviourEqual functions made internal.

-> avoid tests exposed workarounds
-> prepares for SyncField<T>

NetworkBehaviour.HasSyncObjects: internal is enough

explain SyncVar hook guard

feat: Implemented ChangeOwnerMessage (MirrorNetworking#2924)

* Implemented ChangeOwnerMessage
- Separates ownership change from Spawn message
- NetworkIdentityTests updated

* commented log

fix: Obsolete SyncObject Flush method (MirrorNetworking#2931)

* fix: Obsolete SyncObject Flush method

* fixed test

feature: Tanks demo health bars to test [SyncVar]s

perf: NetworkServer.Broadcast O(N) spawned iteration removed. dirty b…

…its for spawned without observers are now cleared when adding the first observer instead (MirrorNetworking#2923)

* change test to add observer

* perf: NetworkServer.Broadcast O(N) 'remove dirty bits for all spawned entities without observers' loop removed. AddObserver clears them instead if we had no observers before.

* don't need this anymore

* set syncobj.recording

* oops

* not a TODO anymore

* fix test

* fix test

* fix test

* fix tests

* fix test

* fix tests

fix: Clear hasAuthority when Unspawning (MirrorNetworking#2927)

* fix: Clear hasAuthority when Unspawning

* Added UnSpawnAndClearAuthority test

NetworkBehaviour.IsDirty: OR both bitmasks instead of comparing separ…

…ately.

fix broken test from rename