Add example for custom sign in page

[zoey-kaiser]

Describe the feature

In sidebase/nuxt-auth#96 we added a custom signin page to the nuxt-auth playground. It might be helpful for developers to also see a preview of this in the nuxt-auth-example.

Additional information

No response

[unaisp-apes]

How to invoke a useFetch from authorize() ?

[zoey-kaiser]

How to invoke a useFetch from authorize() ?

Hello @unaisp-apes. I am not sure what you mean with your question. Could you please give me a bit more context 🤗