feat: System monitoring

[mosslocker]

Prerequisites

• I have searched existing and closed feature requests

Proposal

A web panel that gives an overview of the server's vitals

Motivation

On this panel, I would like to be able to view:

• Server performance, e.g. CPU usage, RAM usage, network activity, uptime, S.M.A.R,T data, power consumption, temperature
• How many packages require updating
• Perhaps some important system logs

Context

Inspiration from:

• Cockpit
• Glances

[hazzuk]

Also worth considering better CLI tools:

• lazyjournal
• isd