Add WillSaveTextDocument and DidSaveTextDocument to the known requests

Author: ahoppen

Sources/LanguageServerProtocol/Messages.swift

@@ -105,13 +105,15 @@ public let builtinNotifications: [NotificationType.Type] = [
   DidOpenTextDocumentNotification.self,
   DidRenameFilesNotification.self,
   DidSaveNotebookDocumentNotification.self,
+  DidSaveTextDocumentNotification.self,
   ExitNotification.self,
   InitializedNotification.self,
   LogMessageNotification.self,
   LogTraceNotification.self,
   PublishDiagnosticsNotification.self,
   SetTraceNotification.self,
   ShowMessageNotification.self,
+  WillSaveTextDocumentNotification.self,
   WorkDoneProgress.self,
 ]