add typings autogen command

typings/rebuild.d.ts

@@ -0,0 +1,5 @@
+import { serializedNodeWithId, idNodeMap, INode } from './types';
+export declare function addHoverClass(cssText: string): string;
+export declare function buildNodeWithSN(n: serializedNodeWithId, doc: Document, map: idNodeMap, skipChild?: boolean): INode | null;
+declare function rebuild(n: serializedNodeWithId, doc: Document): [Node | null, idNodeMap];
+export default rebuild;