feat: updating to SimpleWebTransport v1.3 (MirrorNetworking#3099)

- Allowing max message size to be increase to int32.max
- fixing minor bugs (see change log)

fix: Match & Team Int Mgmt OnCheckObserver (MirrorNetworking#3089)

fix: Missed a couple NetworkConnectionToClient changes

fix: Updated Templates (MirrorNetworking#3090)

breaking: Use NetworkConnectionToClient (MirrorNetworking#3088)

* fix: Use NetworkConnectionToClient

* Revert change to MatchInterestManagement

* Revert change to Basic Example scene

* Revert change to Basic Example Player prefab

* Interest Management too

* Updated MultipleMatches example

* Updated RoomManager and Room example

breaking: NetworkConnection cleanup (MirrorNetworking#3086)

* breaking: NetworkManager: use strong typed OnConnect/OnDisconnect events

* breaking: NetworkConnection server code moved to NetworkConnectionToClient (it shouldn't be in base class, otherwise it would be in client code's NetworkConnectionToServer as well)

* InterestManagement.OnCheckObserver: use NetworkConnectionToClient

syntax

fix(SWT): fixing jslib for Unity2021 (MirrorNetworking#3084)

replacing `Pointer_stringify` with `UTF8ToString`, This still works in  2019.4 as well.

fixes "Runtime is not defined" unity bug. Unity does not auto link Runtime in 2021, this is a bug, checking if it is undefined then creating it fixes the issue, and  will continue you work after unity fixes the bug. Note: `Module['dynCall_vi']` fix does not work here because it throws an exception after each call.

original commits:
James-Frowen/SimpleWebTransport@2f5a74b
James-Frowen/SimpleWebTransport@945b50d

fixes: MirrorNetworking#3012

perf: SyncVar<T> some more inlining

fix: Call OnStopLocalPlayer from ChangeOwner