Add CLI support for NeuroShield resource type

**Related command**
New commands:
az network neuroshield create
az network neuroshield update
az network neuroshield delete
az network neuroshield list
az network neuroshield show

az network neuroshield protected-resource create
az network neuroshield protected-resource delete
az network neuroshield protected-resource show
az network neuroshield protected-resource list

az network neuroshield finding show
az network neuroshield finding list
az network neuroshield finding mitigate
az network neuroshield finding rollback

az network neuroshield mitigation show
az network neuroshield mitigation list
az network neuroshield mitigation execute
az network neuroshield mitigation cancel
az network neuroshield mitigation rollback

**Is your feature request related to a problem? Please describe.**
This is a new resource type being introduced under Microsoft.Network namespace, named NeuroShield. It includes the top-level NeuroShield resource as well as nested child resources: ProtectedResources, Findings, and Mitigations (with mitigate/rollback/execute/cancel actions).

**Describe the solution you'd like**
Would like to add CLI support for this resource type, including the top-level NeuroShield resource and its child resources/actions (ProtectedResources, Findings, Mitigations).

**Describe alternatives you've considered**
N/A

**Additional context**
Swagger: https://github.com/Azure/azure-rest-api-specs/pull/45722
Request example: https://github.com/Azure/azure-rest-api-specs/blob/release-microsoft-network-2026-01-01/specification/network/resource-manager/Microsoft.Network/Network/stable/2026-01-01/examples/NeuroShields_CreateOrUpdate.json