Creating workflow file for deploy-managed-online-endpoint-workspacevnet.sh

[pdhotems]

Description

Checklist

• [ ] I have read the contribution guidelines.
  • General
  • SDK
  • CLI
• [ ] I have coordinated with the docs team (mldocs@microsoft.com) if this PR deletes files or changes any file names or file extensions.
• [ ] Pull request includes test coverage for the included changes.
• [ ] This notebook or file is added to the CODEOWNERS file, pointing to the author or the author's team.