add to package exports the IterationResultSet type

Author: shtaif

src/index.ts

@@ -1,5 +1,5 @@
 import { useAsyncIter, type IterationResult } from './useAsyncIter/index.js';
-import { useAsyncIterMulti } from './useAsyncIterMulti/index.js';
+import { useAsyncIterMulti, type IterationResultSet } from './useAsyncIterMulti/index.js';
 import { Iterate, type IterateProps } from './Iterate/index.js';
 import { iterateFormatted } from './iterateFormatted/index.js';
 import { useAsyncIterState, type AsyncIterStateResult } from './useAsyncIterState/index.js';
@@ -10,6 +10,7 @@ export {
   useAsyncIter,
   type IterationResult,
   useAsyncIterMulti,
+  type IterationResultSet,
   Iterate,
   Iterate as It,
   type IterateProps,