Add Diagrams to Concepts & CRDs section of the Package Managment Section

[asaikali]

The docs at Concepts and CRDs contain a lot of details and it is hard to grasp how the CRDs are related to each other. Enhance the docs on this page by adding a diagram that summarizes the relationship between the various CRDs with annotations on the diagram to provide context. Such a diagram can make the concepts much easier to understand for a new user.

[github-actions[bot]]

This issue is being marked as stale due to a long period of inactivity and will be closed in 5 days if there is no response.

[asaikali]

keeping it fresh.