Feature: vPC Support for `terraform-nxos-nac-nxos`

[Exonical]

Feature Request: vPC Support for terraform-nxos-nac-nxos

Description:
Currently, the terraform-nxos-nac-nxos module does not support configuring Virtual Port Channels (vPCs). vPCs are a critical feature in Cisco NX-OS networks, allowing links that are physically connected to two different devices to appear as a single logical port to a third device.

Use Case:
Automating the configuration of vPCs is essential for managing redundancy, load balancing, and high availability in a scalable and efficient manner via Terraform.

Proposed Solution:
Add native vPC configuration support to the module, allowing users to configure vPC domains, peer links, and vPC member ports.

Example YAML input format

nxos:
  devices:
    - name: Switch1
      url: https://1.2.3.4
      configuration:
        system:
          hostname: Switch1
          mtu: 9216
          feature:
            vpc: true # Ensure VPC feature is enabled
          vpc:
            domain_id: 100 # Example Domain ID
            peer_keepalive:
              destination_ip: 10.0.0.2 # Example Peer Keepalive Dest IP
              source_ip: 10.0.0.1    # Example Peer Keepalive Src IP
              vrf: management        # Example Peer Keepalive VRF
            peer_link:
              interface_id: 1000     # Example PortChannel ID for Peer Link
            vpc_interfaces:
              - name: vpc10                 # Logical name for this VPC Interface config
                interface_id: 10     # VPC ID
                port_channel_id: 10  # PortChannel ID acting as VPC

Current Workaround:
Manual configuration outside of Terraform, or use of custom scripts and templates that are not integrated into the module.

Additional Context:
vPCs are a standard design element in Cisco data center networks. Including vPC configuration in the module would streamline network automation and align with production deployment practices.

The CiscoDevNet/nxos provider already supports this