Add disk usage treshhold in server monitoring alerts

[c-semaan]

What problem will this feature address?

I have a vps with limited disk space, ideally this feature should be available so I don't have to manage an external script for disk usage alerts.

Describe the solution you'd like

Add Disk Usage threshhold (%) field in setup server modal monitoring tab which would trigger a "Server threshold" notification.

Describe alternatives you've considered

bash script

Additional context

No response

Will you send a PR to implement it?

No

[Siumauricio]

Closing as duplicate — disk usage threshold alerts are covered in #3601 which tracks customizable thresholds for all resources (CPU, RAM, disk).