add the next.js handbook translated by abdelhadi

[AhmedElTabarani]

What does this PR do?

Add resource(s) | Remove resource(s) | Add info | Improve repo

For resources

Description

Why is this valuable (or not)?

How do we know it's really free?

For book lists, is it a book? For course lists, is it a course? etc.

Checklist:

• Read our contributing guidelines
• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction)

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[AhmedElTabarani]

This PR for No. 2 of this #6764

[LuigiImVector]

Being that it is a single resource and Next.js is a framework of JavaScript I propose to avoid to create a new category and to insert it on JavaScript

[davorpa]

Being that it is a single resource and Next.js is a framework of JavaScript I propose to avoid to create a new category and to insert it on JavaScript

+1