feat(core): add new bs dnd adapter (#9717)

blocksuite/affine/widget-drag-handle/src/index.ts

@@ -5,3 +5,4 @@ declare type _GLOBAL_ = typeof SurfaceEffects;
 export * from './consts';
 export * from './drag-handle';
 export * from './utils';
+export type { DragBlockPayload } from './watchers/drag-event-watcher';