feat(generative-ai): get mock data schema in AtlasAiService CLOUDP-333849

[kpamaran]

Description

Adds a new getMockDataSchema method to the AtlasAiService to allow clients to generate mock data schemas from a new endpoint in the natural language api

Context: https://jira.mongodb.org/browse/CLOUDP-333849

There are no updates to the UI

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

Open Questions

There should be no breaking changes

This introduces a zod dependency to compass-generative-ai to leverage typescript-friendly request/response schema. I noticed there is another dependency in compass-user-data with the same minor version. I am not sure if it's worth making this a common dependency, but I find zod highly valuable for communicating contracts, validating data, and allowing users to make the most of the type system.

Since this is for a experimental MVP rolled out via a feature flag it has been labeled with "no release notes"

Dependents

Dependency of #7226

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)

[codeowners-service-app]

Assigned himanshusinghs for team compass-developers because Anemy is out of office.

[gribnoysup]

Few small comments, but otherwise LGTM