Feat/jovu onboarding

[yuval-hazaz]

Close: #8434

PR Details

• Create workspace with Demo Repo on onboarding
• Use default project settings from the project when creating a service with Jovu
• Use a new messageType to give Jovu special instructions for onboarding
• Build new onboarding experience using Jovu

PR Checklist

• Tests for the changes have been added
• npm test doesn't throw any error

IMPORTANT: Please review the CONTRIBUTING.md file for detailed contributing guidelines.

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