[Module Proposal]: `avm/res/avs/private-cloud`

### Check for previous/existing GitHub issues/module proposals

- [X] I have checked for previous/existing GitHub issues/module proposals.

### Check this module doesn't already exist in the module indexes

- [X] I have checked for that this module doesn't already exist in the module indexes; or I'm proposing the module to be migrated from CARML/TFVM.

### Bicep or Terraform?

Bicep

### Module Classification?

Resource Module

### Module Name

avm/res/avs/private-cloud

### Module Details

Resource module to implement and configure a private cloud. Should include options for configuring add-ons, basic AVS specific networking items, operational components like monitoring, and the standard interfaces. This will support other pattern modules that include AVS specific networking.

### Do you want to be the owner of this module?

No

### Module Owner's GitHub Username (handle)

_No response_

### (Optional) Secondary Module Owner's GitHub Username (handle)

_No response_