👋 Onboarding first admin

[brunobuddy]

Description

This PR creates a "Register first admin" page for the first launch if the DB is empty.

@SebConejo some styling is needed for the "register first admin" page.

How can it be tested?

• Pull that code
• Delete your /manifest/packages/core/manifest/manifest/backend.db file
• Run npm run dev

You will be redirected to the /auth/welcome page to create a new admin. Follow the instructions.

Ensure that you cannot go to that page again after admin creation.

To repeat to tests, delete again the backend.db file and restart the npm run dev task

Impacted packages

Check the NPM packages that require a new publication or release:

• manifest
• add-manifest
• @mnfst/sdk

Check list before submitting

• I have performed a self-review of my code (no debugs, no commented code, good naming, etc.)
• I wrote the relative tests
• I created a PR for the documentation if necessary and attached the link to this PR
• This PR is wrote in a clear language and correctly labeled

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Name	Status	Preview	Comments	Updated (UTC)
manifest-schema	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 4, 2024 3:40pm

[SebConejo]

Ok for me 👍

@brunobuddy fyi, Here is the page after styling it :