feat(local-explorer-ui): Add schema editor to data studio

[NuroDev]

Fixes DEVX-2415.

Following on from #12453, this PR adds the functionality add and edit database table schemas.

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• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows: No test suite has yet been set up for this package in order to implement some form of basic tests. Manual testing can be done using the steps outlined below.
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: WIP Experimental feature

A picture of a cute animal (not mandatory, but encouraged)

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[changeset-bot]

🦋 Changeset detected

Latest commit: 9250a09

The changes in this PR will be included in the next version bump.

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commit: 89a04bb

[github-actions]

⚠️ Issues found

File: .changeset/young-facts-grin.md

Issue: Experimental feature missing opt-in instructions

The changeset describes a WIP experimental feature but does not explain how users can opt in to it. Per the guidelines:

When adding or changing experimental features, call this out explicitly in the changeset description.

The review prompt also specifies:

Changesets for experimental features should include note on how users can opt in.

The changeset currently ends with "This is a WIP experimental feature." but does not tell users how to access or enable this feature. Please add a brief note on how users can opt in (e.g., a flag, a config option, a specific command, or any other mechanism).

[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/wrangler

Show detailed file reviewers

[emily-shen]

just pulled down the latest changes and i can't seem to set the data type when adding columns anymore

[devin-ai-integration]

Devin Review found 1 new potential issue.

View 17 additional findings in Devin Review.