Add dependency injection

ios/Native/Application/Views/ToolboxHeader.swift

@@ -9,13 +9,14 @@ import SwiftUI
 
 struct ToolboxHeader: View {
   @EnvironmentObject var sharedState: SharedState
+  @Injected var emitter: EventEmitter
   
   var body: some View {
     VStack {
       HStack {
         Text("Actions")
         Button("Make it blue") {
-          sharedState.send(message: "hello from Swift!")
+          emitter.send(message: "hello from Swift!")
         }
       }
       Text("Message: \(sharedState.message)")