Add navigation settings, fix page generation

CHDataManagement/Model/Settings/LocalizedPostSettings.swift

@@ -17,9 +17,18 @@ final class LocalizedPostSettings: ObservableObject {
         self.feedUrlPrefix = feedUrlPrefix
     }
 
+    // MARK: Storage
+
     init(file: LocalizedPostSettingsFile) {
         self.title = file.feedTitle
         self.description = file.feedDescription
         self.feedUrlPrefix = file.feedUrlPrefix
     }
+
+    var file: LocalizedPostSettingsFile {
+        .init(
+            feedTitle: title,
+            feedDescription: description,
+            feedUrlPrefix: feedUrlPrefix)
+    }
 }