fix: Use ReplaceHandler instead of RegisterHandler in NetworkManager

fixing error message (MirrorNetworking#1805)

LogError was incorrectly adding tag to message

feat: Adding ReplaceHandler functions to NetworkServer and NetworkCli…

…ent (MirrorNetworking#1775)

* Replacing debug log with warning

Replacing a handler by mistake will lead to code not running when it is
expected to.

* adding ReplaceHandler methods

* improving warning messages

* using ReplaceHandler in networkManager

* fixing doc comments for RegisterHandler

* fixing doc comments for ReplaceHandler

* Update Assets/Mirror/Runtime/NetworkManager.cs

Co-Authored-By: MrGadget <[email protected]>

* improving doc comments

* improving doc comments for new code

* Update Assets/Mirror/Runtime/NetworkServer.cs

Co-Authored-By: MrGadget <[email protected]>

* Update Assets/Mirror/Runtime/NetworkClient.cs

Co-Authored-By: MrGadget <[email protected]>

Co-authored-by: MrGadget <[email protected]>

feat: Allowing Multiple Concurrent Additive Scenes (MirrorNetworking#…

…1697)

* There's no need for handling scene ids at runtime.

* Adding tests for Instantiate On Scene object

* removing ExecuteInEditMode

none of our function do anything at edit time so removing this tag

* adding check to awake to stop Instantiate

* code style and comments

* using logger for new error

Co-authored-by: Chris Langsenkamp <[email protected]>

feat: ClientScene uses log window

feat: NetworkServer.SendToReady (MirrorNetworking#1773)

* feat: NetworkServer.SendToReady

* Added ready check and default channel

* Changed to optional parameter

* Added shorthand overload SendToReady

* Added comment

feat: Improve weaver error messages (MirrorNetworking#1779)

feat: Improve weaver error messages

Weaver error messages are easier to read and always display
location of error

fix: weaver syncLists now checks for SerializeItem in base class (Mir…

…rorNetworking#1768)

* tests for override in base class

* fixing overrides in base class

* moving check up so that typedef cant be null for the check

fix: call the virtual OnRoomServerDisconnect before the base

Tests for sync dictionary and sync set (MirrorNetworking#1753)

* sync dictionary tests

* rename

* changing error message

* sync set tests