feat: Portal add "Bastion" and "Private DNS Resolver"

[Springstone]

Overview/Summary

This pull request includes significant updates to the eslzArm/eslz-portal.json file, focusing on the deployment options for Azure Virtual Network Manager, sidecar virtual networks, Azure Bastion, and Azure Private DNS Resolver. The changes enhance the flexibility and configurability of the deployment process.

Deployment configuration updates:

• Removed "PREVIEW" from the label of the Azure Virtual Network Manager deployment option.
• Added new options for deploying sidecar virtual networks, including address space configuration and visibility conditions. [1] [2]
• Introduced deployment options for Azure Bastion, including address space configuration and visibility conditions. [1] [2]
• Added deployment options for Azure Private DNS Resolver, including inbound and outbound subnet configurations and visibility conditions. [1] [2]

Parameter updates:

• Updated the parameters section to include new configurations for sidecar virtual networks, Azure Bastion, and Azure Private DNS Resolver.

Azure Public