ui: add ProblemSelectAutoComplete for contest_edit

packages/ui-default/pages/contest_edit.page.js

@@ -0,0 +1,9 @@
+import { NamedPage } from 'vj/misc/Page';
+import ProblemSelectAutoComplete from 'vj/components/autocomplete/ProblemSelectAutoComplete';
+
+const page = new NamedPage(['contest_edit', 'contest_create'], () => {
+  console.log($('[name="pids"]'));
+  ProblemSelectAutoComplete.getOrConstruct($('[name="pids"]'));
+});
+
+export default page;