[docs] Outdated/incomplete installation instructions

[tekknow]

Related page

https://mui.com/toolpad/core/introduction/installation/

Kind of issue

Missing information

Issue description

Step 4 under automatic installation shows a tree of how the new project should look. But mine looks like this:
├── app
│ ├── (dashboard)
│ ├──── orders
│ └────── page.tsx
│ ├── layout.tsx
│ ├── page.tsx
│ ├── api\auth[...nextAuth]
│ └──── route.tsx
│ ├── auth\signin
│ ├──── actions.tsx
│ ├──── page.tsx
└─── layout.tsx

Context

During installation, I opted to include signin options, eg. google, facebook, twitter, etc. Now those show up as the first page but I can't figure out how to get past it to get to the Dashboard UI. Please add instructions for that.

Search keywords: signin, auth

[bharatkashyap]

Context

During installation, I opted to include signin options, eg. google, facebook, twitter, etc. Now those show up as the first page but I can't figure out how to get past it to get to the Dashboard UI. Please add instructions for that.

Search keywords: signin, auth

The SignInPage docs page https://mui.com/toolpad/core/react-sign-in-page/#usage-with-authentication-libraries has more information on setting up these OAuth providers; I've updated the installation section to link to this page directly in the linked PR