Add editor history (#1284)

* add slate editor history

* reset mark on editor reset

src/app/components/editor/common.ts

@@ -124,6 +124,15 @@ export const resetEditor = (editor: Editor) => {
   });
 
   toggleBlock(editor, BlockType.Paragraph);
+  removeAllMark(editor);
+};
+
+export const resetEditorHistory = (editor: Editor) => {
+  // eslint-disable-next-line no-param-reassign
+  editor.history = {
+    undos: [],
+    redos: [],
+  };
 };
 
 export const createMentionElement = (