Messenger example - contact authorization improvements

Examples/xx-messenger/Sources/AppFeature/AppEnvironment+Live.swift

 import AppCore
+import CheckContactAuthFeature
 import ContactFeature
 import ContactsFeature
 import Foundation
@@ -49,6 +50,13 @@ extension AppEnvironment {
           mainQueue: mainQueue,
           bgQueue: bgQueue
         )
+      },
+      checkAuth: {
+        CheckContactAuthEnvironment(
+          messenger: messenger,
+          mainQueue: mainQueue,
+          bgQueue: bgQueue
+        )
       }
     )