feat(paginator): add custom page name

[FlorianV85]

❓ Type of change

• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

The purpose of this PR is to add the option to customize the page name (Paginator). Currently, metadata generates URLs with a static page query parameter.

Why would this be useful?

• Generally, it is preferable to give developers the freedom to adapt whatever they need. For example: in a special context, you might need a qs named something other than page. Imagine that you have multiple paginations on the same page.
• This can simplify the implementation of certain features in some packages, such as Inertia Adapter.

Implementation is very simple:
The custom page name can be defined with a new pageName argument added to the Paginator:

const users = await User.query().paginate(1, 5, 'customPageName')

Now all metadata has the correct URLs with the custom page name.
users?customPageName=x

If no page name is defined, pageName defaults to page.

A test has been added, and it appears to be successful.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[thetutlage]

Hello @FlorianV85

Thanks for the PR. Can you please open another PR for the docs as well? https://github.com/adonisjs/lucid.adonisjs.com/tree/main

[FlorianV85]

It's done! adonisjs/lucid.adonisjs.com#63

[thetutlage]

Thanks 👍🏽

I may rename the .paginate prop to be an object and not a bare string before the release