ui-default: init

将ui-default合并至主存储库便于维护

packages/ui-default/components/scratchpad/reducers/index.js

@@ -0,0 +1,14 @@
+import { combineReducers } from 'redux';
+import ui from './ui';
+import editor from './editor';
+import pretest from './pretest';
+import records from './records';
+
+const reducer = combineReducers({
+  ui,
+  editor,
+  pretest,
+  records,
+});
+
+export default reducer;