Complete the work for the json-jsonata manager

[HonkingGoose]

Describe the proposed change(s).

This PR is stale, and needs to be updated:

• feat: Implement json-jsonata manager that can extract dependencies json configuration files #17077

@RahulGautamSingh wanted to take over, and finish this PR. So here's an issue to remind them. 😉

This issue has more context:

• Generic manager that understands json and yaml structure. #15193

[github-actions]

Hi there,

You're asking us to support a new package manager. We need to know some basic information about this package manager first. Please copy/paste the new package manager questionnaire, and fill it out in full.

Once the questionnaire is filled out we'll decide if we want to support this new manager.

Good luck,

The Renovate team