[Feat] Environments diff view

[a8trejo]

Related issue

Fixes #1160

Why this PR exists

• A maintainer explicitly invited this PR in the linked issue or discussion
• I am a maintainer / this is internal Roomote work

What changed

Added a diff view to edit environments and have visual reference on what is changing and what is different across versions

How it was tested

Manual testing

Before editing

During editing

Edit/Restore older version

Checklist

• The PR title follows the repo convention: [Fix], [Feat], [Improve], [Refactor], [Docs], or [Chore] followed by a user-facing description
• This PR is small and scoped to one change
• pnpm lint and pnpm check-types pass locally
• I added tests or included a clear manual validation note above
• I removed secrets, tokens, private keys, and customer data from code, logs, and screenshots
• If this change should appear in the changelog, I ran pnpm changeset

[roomote-community]

No new code issues found. See task

_{Reviewed 96765d5}

[github-actions]

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[github-actions]

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[a8trejo]

I have read the CLA Document and I hereby sign the CLA

[brunobergher]

We still need to reason this (and preview) into both manual and agent-based changes, but that's a pre-existing problem.

LGTM!