[Doc] Add ra-data-nestjs-query to the list of Data Providers

[mrnkr]

Problem

There was no Nestjs-query data provider available.

Solution

I wrote one and added it to the list of supported backends.

How To Test

https://github.com/marmelab/react-admin?tab=readme-ov-file#documentation-1

Serve the documentation like it is suggested in the README.md file and look at the DataProviderList.md file. There should be 3 GraphQL data providers in the list, with the last one being the one I added.

Additional Checks

• The PR targets master for a bugfix, or next for a feature
• The PR includes unit tests (if not possible, describe why) (N/A)
• The PR includes one or several stories (if not possible, describe why) (N/A)
• The documentation is up to date

Also, please make sure to read the contributing guidelines.

[slax57]

Thank you for your contribution! 🙂

Although your dataProvider is based on ra-data-graphql, I figured it would be better placed next to the NestJS CRUD dataProvider.

I also took the liberty to add the logo.