Add support for preferences, @StateObject, @EnvironmentObject, an…

…d custom `DynamicProperty` types (#501)

* Pass preferences up the Fiber tree

* Working preferences (except for backgroundPreferenceValue)

* Initial StateObject support

* Fix layout caching bug

* Support StateObject/EnvironmentObject/custom DynamicProperty

* Add doc comments for bindProperties and updateDynamicProperties

* Use immediate scheduling in static HTML and test renderers

* Add preferences test

* Add state tests and improve testing API

* Attempt to fix tests

* Fix preference tests

* Attempt to fix tests when Dispatch is unavailable

* #if out on os(WASI)

* Add check for WASI to test

* Add check for WASI to TestViewProxy

* #if out of import Dispatch when os == WASI

* Remove all Dispatch code

* Remove address from debugDescription

* Move TestViewProxy to TokamakTestRenderer

* Add memory address to Fiber.debugDescription

* Fix copyright year

* Add several missing types to Core.swift

* Add missing LayoutValueKey to Core.swift

* Fix issues with view trait propagation

* Enable App/SceneStorage in DOMFiberRenderer

* Address review comments

* Revise preference implementation

Sources/TokamakCore/Fiber/Fiber+CustomDebugStringConvertible.swift

@@ -17,12 +17,13 @@
 
 extension FiberReconciler.Fiber: CustomDebugStringConvertible {
   public var debugDescription: String {
+    let memoryAddress = String(format: "%010p", unsafeBitCast(self, to: Int.self))
     if case let .view(view, _) = content,
        let text = view as? Text
     {
-      return "Text(\"\(text.storage.rawText)\")"
+      return "Text(\"\(text.storage.rawText)\") (\(memoryAddress))"
     }
-    return typeInfo?.name ?? "Unknown"
+    return "\(typeInfo?.name ?? "Unknown") (\(memoryAddress))"
   }
 
   private func flush(level: Int = 0) -> String {