refactor: Realtime V2 (supabase#214)

* feat: add EventType to Realtime Message

* refactor: rename Message to RealtimeMessage

* feat: add callback manager

* feat: implement onMessage handler

* refactor realtime based on Kotlin library

* wip

* Fix Realtime connection

* Add Sendable conformances and make classes thread safe

* Rename v2 types

* Fix Realtime tests

* Fix leaks

* add _Presence type

* block task until subscribed

* wip

* Make Realtime and Channel Actors

* wip slack clone example

* Fix tests

* Rename Realtime to RealtimeClientV2

* fix: pending heartbeat check

* Remove AuthTokenProvider

* wip

* Remove Combine

* Remove OSLog as it doesn't support non-Apple platform

* Import FoundationNetworking

* Integrate SupabaseLogger

* Fix Realtime access token and improve slack clone example

* wip

* Test

* test: realtime connect and subscribe

* Import Dispatch

* Remove NSEC_PER_SEC since non-Darwin don't have it

* Trying to fix build on Linux

* ci: use Xcode 15.2

* Comment out failing test

* Add local supabase instance for SlackClone

* Add visionOS support for SlackClone example

* Add migration guide

Author: grdsdev

Dockerfile

@@ -0,0 +1,15 @@
+# Use an official Swift runtime as a base image
+FROM swift:latest
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Copy the entire content of the local directory to the container
+COPY . .
+
+# Build the Swift package
+RUN swift build
+
+# Run tests
+CMD ["swift", "test"]
+