[Feature]: New-AzRecoveryServicesBackupProtectionPolicy should support creation of Enhanced VM backup policies.

### Description of the new feature

New-AzRecoveryServicesBackupProtectionPolicy only currently supports creation of "Standard" VM backup policies. Enhanced Backups have been in public release for roughly six months, and while the get- cmdlets have been updated to support them, the new- cmdlets have not. This prevents creation of new enhanced policies via Azure PowerShell.

This issue is also present in Azure CLI. However, in Azure CLI you can provide a JSON file that specifies enhanced backup information as a workaround.

### Proposed implementation details (optional)

Update flags to support Enhanced backup policy options.

Start with the New-AzRecoveryServicesBackupProtectionPolicy cmdlet and compare its supported options with the get- cmdlets that already handle Enhanced VM backup policies. Verify how Azure PowerShell represents Enhanced backup information and identify the existing creation tests, if any. Done means the cmdlet can create Enhanced VM backup policies with flags rather than requiring a JSON workaround.

Written by the indexing model from the issue text.