Add current process cpu/memory usage to SystemInformationDiagnosticsPlugin

[francisdb]

What problem does this solve or what need does it fill?

System cpu/memory is useful but current process cpu/memory is even more useful.

What solution would you like?

Adding 2 extra metrics:

• process/cpu_usage in %core, eg 200% if 2 cores in use
• process/mem_usage in MB

What alternative(s) have you considered?

Extending the plugin in my own app

Additional context

Following code would need to be added to fetch the info.

                let pid = sysinfo::get_current_pid().expect("Failed to get current process ID");
                sys.refresh_processes(ProcessesToUpdate::Some(&[pid]), true);

                let process_mem_usage = sys
                    .process(pid)
                    .map(|p| p.memory() as f64 / 1024.0 / 1024.0) // Convert to MB
                    .unwrap_or(0.0);

                let process_cpu_usage = sys
                    .process(pid)
                    .map(|p| p.cpu_usage() as f64)
                    .unwrap_or(0.0);

If there is interest in this I'm willing to create a PR

[francisdb]

Thanks @tjlaxs !