chore(gui-v2): add plugin export from dayjs plugin file

packages/nc-gui-v2/plugins/a.dayjs.ts

@@ -3,8 +3,11 @@ import relativeTime from 'dayjs/plugin/relativeTime'
 import customParseFormat from 'dayjs/plugin/customParseFormat'
 import duration from 'dayjs/plugin/duration'
 import utc from 'dayjs/plugin/utc'
+import { defineNuxtPlugin } from '#imports'
 
-dayjs.extend(utc)
-dayjs.extend(relativeTime)
-dayjs.extend(customParseFormat)
-dayjs.extend(duration)
+export default defineNuxtPlugin(() => {
+  dayjs.extend(utc)
+  dayjs.extend(relativeTime)
+  dayjs.extend(customParseFormat)
+  dayjs.extend(duration)
+})