[Module Proposal]: `avm-ptn-azure-ipam`

### 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?

Terraform

### Module Classification?

Pattern Module

### Module Name

avm-ptn-azure-ipam

### Module Details

A terraform pattern to deploy the https://azure.github.io/ipam/#/ container as a web app with supporting resources.
Supported deployment models are the default public deployment or a virtual network integrated web app that can use service routes or private endpoints to access resources.

### 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)

ChrisChapman-gh