Messenger example - send auth request

• Refactor user search
• Add contact feature
• Save found contacts
• Add send request feature
• Send auth request
• Fix saving my contact during registration

Examples/xx-messenger/Sources/ContactFeature/ContactFeature.swift

@@ -25,6 +25,8 @@ public struct ContactState: Equatable {
 public enum ContactAction: Equatable {
   case start
   case dbContactFetched(XXModels.Contact?)
+  case saveFactsTapped
+  case sendRequestTapped
 }
 
 public struct ContactEnvironment {
@@ -75,5 +77,11 @@ public let contactReducer = Reducer<ContactState, ContactAction, ContactEnvironm
   case .dbContactFetched(let contact):
     state.dbContact = contact
     return .none
+
+  case .saveFactsTapped:
+    return .none
+
+  case .sendRequestTapped:
+    return .none
   }
 }