Fix dashboard deployment/creation

[JCZuurmond]

Fixes the dashboard deployment by:

• Raising an error when dashboard is invalid
• Deprecating the deploy_dashboard for the create_dashboard as this is more accurate and available after refactoring Lakeview dashboard creation to be part of DashboardMetadata
• Add publish flag to create_dashboard

Related issues

• Resolves #222
• Resolves #229
• Partially resolves #220: leaves the return type to be discussed

Below the dashboard created through the deprecated deploy_dashboard:

[github-actions[bot]]

This PR breaks backwards compatibility for databrickslabs/ucx downstream. See build logs for more details.

_{Running from downstreams #320}

[github-actions[bot]]

✅ 35/35 passed, 2 skipped, 8m45s total

_{Running from acceptance #324}