Add Vserver resources diagram

[Copilot]

Each vserver lacked a visual representation of its allocated resources. Adds a per-SVM diagram generated via Diagrammer.Core showing the key resource relationships at a glance.

New: Get-AbrOntapVserverDiagram

• SVM node: name, state, allowed protocols, IPSpace, root volume
• Aggregates subgraph: each allocated aggregate with type, available space, SnapLock type
• LIFs subgraph: each data interface with IP/WWPN, protocol, operational status, home port status
• Edges connect the SVM node to both subgraphs
• Respects existing diagram themes (Default, Black, Neon) and debug mode

Integration

Diagram is emitted at the top of each $SVM Vserver Configuration section via Export-AbrOntapDiagram, consistent with the Cluster, Aggregate, Network, and Replication diagram patterns:

$VserverDiagram = Get-AbrOntapVserverDiagram -Vserver $SVM
if ($VserverDiagram) {
    Export-AbrOntapDiagram -DiagramObject $VserverDiagram `
        -MainDiagramLabel "$SVM Vserver Diagram" `
        -FileName "AsBuiltReport.NetApp.Ontap.Vserver.$SVM"
}

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add Vserver resources diagram</issue_title>
<issue_description>### Description

Create a diagrams of the resources used by the vserver like:

1. vserver aggregate used
2. network interfaces (lifs)
3. ip used
4. protocol used
5. etc

Use diagrammer.core to build the diagram

Additional Context

No response

Before submitting

• I have read the documentation, and referred to the known issues before submitting this change request.
• I have checked for previously opened & closed issues before submitting this change request.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add Vserver resources diagram #74

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