Use ObjectPageHeader in header area to show MCP metadata

[andreaskienle]

Acceptance Criteria

• Created By is shown
• Created at is shown
• Dispay name is shown as larger title, if none, show k8s resource name
• Actual K8s resource name is shown as tooltip

[andreaskienle]

With the previous changes, we already show the display name as the main title.

I added the k8s resource name statically to the header.