add MS Power Automate

[nsano-rururu]

• [ ] ms_power_automate_webhook_url
• [ ] ms_power_automate_alert_summary
• [ ] ms_power_automate_summary_text_size
• [ ] ms_power_automate_body_text_size
• [ ] ms_power_automate_proxy
• [ ] ms_power_automate_kibana_discover_attach_url
• [ ] ms_power_automate_kibana_discover_title
• [ ] ms_power_automate_kibana_discover_color
• [ ] ms_power_automate_ca_certs
• [ ] ms_power_automate_ignore_ssl_errors
• [ ] ms_power_automate_opensearch_discover_attach_url
• [ ] ms_power_automate_opensearch_discover_title
• [ ] ms_power_automate_opensearch_discover_color