Revert "fix(types): don't explicitly type nuxtifyConfig"

This reverts commit a9b0a06.

Author: davidstackio

src/runtime/composables/nuxtify.ts

@@ -1,3 +1,6 @@
+// Types
+import type { ModuleOptions } from '../../types'
+
 import { useAppConfig } from '#imports'
 
-export const useNuxtifyConfig = () => useAppConfig().nuxtify
+export const useNuxtifyConfig = (): ModuleOptions => useAppConfig().nuxtify