add setNodeAttributes command

packages/core/src/extensions/index.ts

@@ -10,6 +10,7 @@ export { RemoveMarks } from './removeMarks'
 export { ScrollIntoView } from './scrollIntoView'
 export { SelectAll } from './selectAll'
 export { SelectParentNode } from './selectParentNode'
+export { SetNodeAttributes } from './setNodeAttributes'
 export { SetBlockType } from './setBlockType'
 export { SetContent } from './setContent'
 export { SinkListItem } from './sinkListItem'