adb-unity-catalog-basic-demo needs a workspace to begin with

[rkkalluri]

adb-unity-catalog-basic-demo needs a workspace to begin with but with the new Unity by default feature we get a metastore created when the first workspace is launched in Azure Databricks for a new account.

I had to delete my metastore from admin console to get this demo running.

We need to think about this flow and create a metastore + workspace as part of the example

[alexott]

Can you check the examples/adb-lakehouse?