Monitoring: Unified resource usage overview across all projects/services

What problem will this feature address?

When CPU or memory spikes appear on the monitoring page, there is no way to identify which project or service is causing it without manually opening each one individually. With 20+ projects running, this makes diagnosing performance issues very slow and frustrating.

Describe the solution you'd like

A unified resource overview panel on the monitoring page that shows CPU and memory usage for all projects and services on a single screen — similar to docker stats but built into the UI. Ideally sortable by resource usage so the heaviest consumers are immediately visible at the top.

Describe alternatives you've considered

Running docker stats via SSH directly on the host. It works but defeats the purpose of having a management UI, and it's not accessible to team members who don't have server access.

Additional context

Managing 20+ projects on a single Dokploy instance. Currently the only way to investigate a spike is to click into each project one by one and check its individual monitoring graph, which is not practical during an active incident.

Will you send a PR to implement it?

No

Start at the monitoring page and compare its per-project monitoring graph with the docker stats workflow described in the issue. Done means one screen shows CPU and memory usage for all projects and services, with the resource-heavy entries sortable to the top.