Add status to ImageNode GQL Fields

[jopemachine]

Motivation  

• GraphQL clients (including the UI) should be able to query and display the new status value.
• Enables client-side filtering or styling based on the status.

Required Features

• Extend the ImageNode type to include a status field.
• Update GraphQL schema documentation to reflect the new field.

Impact  

• GraphQL-based consumers (WebUI, CLI) can now fetch and utilize the status field.
• The change is backward-compatible, but client code may optionally be updated to display or use the new field.

Testing Scenarios

• Confirm that queries for ImageNode return the correct status values.
• Verify that the field is optional or defaults correctly for existing queries.
• Ensure clients can filter and sort images by status if needed.