feat(perf): lazy-load studio via dynamic imports to reduce install size

[abhi-03-kh]

Problem

The CLI currently bundles @asyncapi/studio (~1GB+) as a hard dependency. This forces CI/CD users and automation pipelines to download a full React/Next.js web application that they never use.

Solution

• Moved @asyncapi/studio from dependencies to optionalDependencies in package.json.
• Refactored src/domains/models/Studio.ts and Preview.ts to use dynamic import() logic.
• Added graceful error handling: if a user runs start studio without the package, they receive a helpful prompt to install it instead of a crash.

Results

Scenario	Install Size	Notes
Before (Hard Dep)	~1.6 GB	All users pay the cost
After (Lite)	698 MB	~57% Reduction 📉
After (With Studio)	~1.6 GB	Only users who need it pay the cost

Verification

• npm install --omit=optional results in a 698MB install size.
• asyncapi validate runs successfully without Studio installed.
• asyncapi start studio fails gracefully with a helpful error message when missing.
• asyncapi start studio works correctly (launches v1.1.0) when the package is manually installed.
• Applied fixes for WebSocket handling and Preview command stability.

Breaking Change

Users who rely on asyncapi start studio without explicitly installing @asyncapi/studio will now see an error message instructing them to install it, rather than a crash.

Closes #1752

[changeset-bot]

🦋 Changeset detected

Latest commit: 7bf7788

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

This PR includes changesets to release 1 package

Name	Type
@asyncapi/cli	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[sonarqubecloud]

Quality Gate failed

Failed conditions
B Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

Catch issues before they fail your Quality Gate with our IDE extension SonarQube for IDE