feat: Add UI without functionality for "Start with an index" flow CLOUDP-311781

[rubydong]

Description

Set up the UI for "Start with an index flow". A lot of the functionality is not implemented yet and will be done in future tickets.

Screen.Recording.2025-04-21.at.1.44.37.PM.mov

still able to create index

Control

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• If this change updates the UI, screenshots/videos are added and a design review is requested
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)

[rubydong]

some repetitive code for now but this would make it easier to clean up in the future whether we release the variant or keep things as is

[Anemy]

Repeating code will make it so that if we introduce unrelated changes, we'll have to remember to update both (and may lead to something not getting included). I think ideally we should avoid that. Are there large changes coming in the accordion changes that will make these very different?

[rubydong]

for accordion we're just gonna change how it looks but nothing with functionality.

i thought it'd be cleaner this way but i can revert back to a combined view

[Anemy]

Looking good, left a couple comment, feel free to ping me on slack if you'd like to go over them sync!

[Anemy]

Repeating code will make it so that if we introduce unrelated changes, we'll have to remember to update both (and may lead to something not getting included). I think ideally we should avoid that. Are there large changes coming in the accordion changes that will make these very different?