[Module Proposal]: `aks-baseline`

### 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.

### Bicep or Terraform?

Bicep

### Module Classification?

Pattern Module

### Module Name

avm/ptn/container-service/aks-baseline

### Module Details

Please add a Pattern Module named `avm/ptn/container-service/aks-baseline`, this module will create the required resources for the baseline architecture for an Azure Kubernetes Service (AKS) cluster.

For details, please refer to:
* https://github.com/mspnp/aks-baseline/
* https://learn.microsoft.com/azure/architecture/reference-architectures/containers/aks/baseline-aks

### 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_

Start by reviewing the linked mspnp/aks-baseline repository and the Azure Architecture baseline reference. Compare the required resources and module conventions with the Azure Verified Modules indexes. Done means adding the avm/ptn/container-service/aks-baseline Bicep pattern module to the repository and indexes, with the baseline architecture represented.

Written by the indexing model from the issue text.