try and document auth0 integration with other frameworks

[edublancas]

We recently shipped an integration with Auth0, we already tested with:

• streamlit
• panel

but we need to check if the following frameworks work:

• shiny (R) Shiny R auth0 example #225
• Solara Solara auth0 example #220
• chainlit Dash, Chainlit auth0 example #222
• dash Dash, Chainlit auth0 example #222
• voila Voila auth0 example #224

if they don't, we just need to report it here and we'll tackle it later. if it works, we need to:

• upload a basic app
  • it should show how to read the request headers that display the user name
  • show how to add the logout button (note that the logout feature is broken currently, we'll push a fix soon, but you can put the logout link now)
  • sample panel app: https://github.com/ploomber/doc/tree/main/examples/panel/app-with-auth0
  • sample streamlit app: https://github.com/ploomber/doc/blob/main/examples/streamlit/app-with-auth0/app.py
• we also need to modify the docs so the framework's section documents the auth0 integration, for an example, look at
  • streamlit
  • panel

[edublancas]

@neelasha23 please do solara, and chainlit (can be a single PR for both)

[edublancas]

note: I started working on the Shiny R example but I could not read the headers: 76b5569 (the function returns an empty string)