Model restructure for IBVS

[xansh]

📝Description

This PR restructures the Radial1DModel to support variable inner boundary velocity. This is part of the GSoC'23 project "Inner Boundary Velocity Solver".

Type: 🎢 infrastructure

📌 Resources

GSoC Ideas Page: https://tardis-sn.github.io/gsoc_2023/ideas/
Inner Boundary Velocity Solver Project Page: https://summerofcode.withgoogle.com/programs/2023/projects/uyYkVw0V

🚦 Testing

How did you test these changes?

• Testing pipeline
• Other method (describe)
• My changes can't be tested (explain why)

☑️ Checklist

• I requested two reviewers for this pull request
• I updated the documentation according to my changes
• I built the documentation by applying the build_docs label

Note: If you are not allowed to perform any of these actions, ping (@) a contributor.

[tardis-bot]

*beep* *bop*

Hi, human.

I'm the @tardis-bot and couldn't find your records in my database. I think we don't know each other, or you changed your credentials recently.

Please add your name and email to .mailmap in your current branch and push the changes to this pull request.

In case you need to map an existing alias, follow this example.

[tardis-bot]

*beep* *bop*

Hi, human.

I'm the @tardis-bot and couldn't find your records in my database. I think we don't know each other, or you changed your credentials recently.

Please add your name and email to .mailmap in your current branch and push the changes to this pull request.

In case you need to map an existing alias, follow this example.

[andrewfullard]

Replaced by other model restructure work