Add notification channel lookup

[samforts]

Describe the issue

In the asset bundle main databricks.yml it's possible to set vars based on a name lookup. This is possible for :

but does not include workspace Notification destinations.

Configuration

variables:
  notification_hook:
    lookup:
      notification: "Teams channel"

Steps to reproduce the behavior

Please list the steps required to reproduce the issue, for example:

1. Run databricks bundle validate.

Desired Behavior (enhancement)

Performs notifications destination lookup.

OS and CLI version

Windows 10
Databricks CLI v0.232.1

Is this a regression?

No