fully move to bicep

Hi,

currently the repository contains the bicep templates AND the arm template.

Indeed the compile step is not part of the build pipeline and thus just the pre-compiled ARM template is executed:
https://github.com/Azure/data-management-zone/blob/571c618dbf0ad636e13606b9a558af88d34e5e9c/.ado/workflows/dataManagementZoneDeployment.yml#L60

Shouldn't
```bash
az bicep build --file .\main.bicep
```

be added to first compile bicep to ARM and then deploy that ...

Thanks for the great repo!