Notifications from ProxMox

[CCOSTAN]

Leverage Webhooks for Notifications to HA from ProxMox

https://www.reddit.com/r/Proxmox/comments/1i1330y/quick_guide_to_add_telegram_notifications_using/

https://www.reddit.com/r/Proxmox/comments/1gxpljd/webhook_notifications/

[CCOSTAN]

#1517 - You can probably use HA to generate alerts once this is put in.