[Module Proposal]: `avm/res/key-vault/managed-hsm`

### 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?

Resource Module

### Module Name

avm/res/key-vault/managed-hsm

### Module Details

Create AVM module for managed-hsm to deploy the resource
Deploy AVM module

Azure Resource Reference: https://learn.microsoft.com/en-us/azure/templates/microsoft.keyvault/managedhsms?pivots=deployment-language-bicep

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

Yes

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

mtonneau

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

_No response_