Proposed changes

This PR introduces the core functionality for moving actual applications, data queries, and datasources between different environments. Previously, only the metadata of "managed objects" could be transferred; this change enables the deployment of the actual object content.

This addresses the user's need to move objects like apps and data queries between environments.

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

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• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

Further comments

This feature implements a two-step transfer process: first, the managed object metadata is transferred, and then the actual object (app, query, or datasource) is deployed via new backend endpoints.

Key components introduced/modified:

• Backend (ObjectDeploymentController.java): New controller with placeholder endpoints for /deploy/app, /deploy/query, and /deploy/datasource. Note: The actual deployment logic within these endpoints is currently marked with TODO comments and needs to be implemented by the maintainers.
• Frontend (TransferObjectModal.tsx): A new modal component that provides a user interface for selecting the target environment and configuring deployment options (e.g., transfer credentials, publish on target).
• Frontend Service (managed-objects.service.ts): The transferManagedObject function has been updated to trigger the new backend deployment endpoints after the metadata transfer. A new deployObject function was also added for direct deployment.
• Documentation (OBJECT-MOVEMENT-README.md): A comprehensive guide explaining the feature, its architecture, usage, and API endpoints.
• Tests (test-object-deployment.js): A new test script to verify the new backend deployment endpoints.

This PR provides the full UI and API structure for object movement, ready for the core deployment logic to be filled in on the backend.