Cannot create or remove Automation Account runbook webhook

### Describe the bug

There are no subcommands to create or remove Automation Account runbook webhooks in Azure CLI

### Related command

`az automation runbook`

### Errors

Command does not exist

### Issue script & Debug output

N/A

### Expected behavior

Azure CLI commands that let you create and remove Automation Account runbook webhooks

### Environment Summary

azure-cli 2.69.0

core 2.69.0
telemetry 1.1.0

Extensions:
account 0.2.5
automation 1.0.0b1
maintenance 1.7.0b1

Dependencies:
msal 1.31.2b1
azure-mgmt-resource 23.1.1

Python location '/opt/homebrew/Cellar/azure-cli/2.69.0/libexec/bin/python'
Config directory '/Users/rjb003/.azure'
Extensions directory '/Users/rjb003/.azure/cliextensions'

Python (Darwin) 3.12.9 (main, Feb 4 2025, 14:38:38) [Clang 16.0.0 (clang-1600.0.26.6)]

Legal docs and information: aka.ms/AzureCliLegal

Your CLI is up-to-date.

### Additional context

_No response_