feat: add automation command and retire drift

[TacoRocket]

Summary

• add the new automation command with fixture, schema, help, table, and output coverage
• retire drift ordering for app-services, functions, and arm-deployments
• fix the default install path by adding the runtime dependency needed for azure-mgmt-automation

Validation

• python3 -m ruff check src tests scripts
• python3 -m pytest -q
• fresh temp venv install via pip install -e .
• fresh-install import smoke: from azure.mgmt.automation import AutomationClient
• live run: python -m azurefox --output json --outdir /tmp/azurefox-live-automation automation

Notes

• live validation completed successfully against the current Azure context and returned zero Automation accounts with zero issues
• the pre-merge checklist in the reference workspace now includes an explicit frictionless-install question so future commands verify that pip install azurefox stays sufficient for end users