Update example app

This MR updates the example app so it uses the new Bindings wrapper.

• Present landing page with options to create or load cMix.
• Allow removing cMix if stored.
• Start/stop network follower.
• Show network follower status.
• Observe and display network health status.

Example/example-app/Sources/AppFeature/App.swift

@@ -3,8 +3,6 @@ import ComposableArchitecture
 import ElixxirDAppsSDK
 import ErrorFeature
 import LandingFeature
-import MyContactFeature
-import MyIdentityFeature
 import SessionFeature
 import SwiftUI
 
@@ -23,9 +21,7 @@ struct App: SwiftUI.App {
 
 extension AppEnvironment {
   static func live() -> AppEnvironment {
-    let clientSubject = CurrentValueSubject<Client?, Never>(nil)
-    let identitySubject = CurrentValueSubject<Identity?, Never>(nil)
-    let contactSubject = CurrentValueSubject<Data?, Never>(nil)
+    let cmixSubject = CurrentValueSubject<Cmix?, Never>(nil)
     let mainScheduler = DispatchQueue.main.eraseToAnyScheduler()
     let bgScheduler = DispatchQueue(
       label: "xx.network.dApps.ExampleApp.bg",
@@ -34,40 +30,22 @@ extension AppEnvironment {
 
     return AppEnvironment(
       makeId: UUID.init,
-      hasClient: clientSubject.map { $0 != nil }.eraseToAnyPublisher(),
+      hasCmix: { cmixSubject.map { $0 != nil }.eraseToAnyPublisher() },
       mainScheduler: mainScheduler,
       landing: LandingEnvironment(
-        clientStorage: .live(
+        cmixManager: .live(
           passwordStorage: .keychain
         ),
-        setClient: { clientSubject.send($0) },
+        setCmix: { cmixSubject.value = $0 },
         bgScheduler: bgScheduler,
         mainScheduler: mainScheduler,
         error: ErrorEnvironment()
       ),
       session: SessionEnvironment(
-        getClient: { clientSubject.value },
+        getCmix: { cmixSubject.value },
         bgScheduler: bgScheduler,
         mainScheduler: mainScheduler,
-        makeId: UUID.init,
-        error: ErrorEnvironment(),
-        myIdentity: MyIdentityEnvironment(
-          getClient: { clientSubject.value },
-          observeIdentity: { identitySubject.eraseToAnyPublisher() },
-          updateIdentity: { identitySubject.value = $0 },
-          bgScheduler: bgScheduler,
-          mainScheduler: mainScheduler,
-          error: ErrorEnvironment()
-        ),
-        myContact: MyContactEnvironment(
-          getClient: { clientSubject.value },
-          getIdentity: { identitySubject.value },
-          observeContact: { contactSubject.eraseToAnyPublisher() },
-          updateContact: { contactSubject.value = $0 },
-          bgScheduler: bgScheduler,
-          mainScheduler: mainScheduler,
-          error: ErrorEnvironment()
-        )
+        error: ErrorEnvironment()
       )
     )
   }