feat(Auth) Keychain Sharing (App Reload Required)

Author: yaroluchko

AmplifyPlugins/Auth/Sources/AWSCognitoAuthPlugin/Models/AWSCognitoSecureStoragePreferences.swift

@@ -12,8 +12,11 @@ public struct AWSCognitoSecureStoragePreferences {
 
     /// The access group that the keychain will use for auth items
     public let accessGroup: AccessGroup?
+    
+    public let migrateKeychainItemsOfUserSession: Bool
 
-    public init(accessGroup: AccessGroup? = nil) {
+    public init(accessGroup: AccessGroup? = nil, migrateKeychainItemsOfUserSession: Bool = true) {
         self.accessGroup = accessGroup
+        self.migrateKeychainItemsOfUserSession = migrateKeychainItemsOfUserSession
     }
 }