Graph versions of all the numerical widgets

## Feature Description

Would it be possible to have a graph version of the widgets, that give numerical values, such that you can see historical data? Ideally, soemthing similar to https://docs.qtile.org/en/stable/manual/ref/widgets.html#cpugraph

## Use Case

Having a historical data to take a look at is useful.

## Compositor

Is this feature specific to one compositor?

- [x] All compositors
- [ ] niri
- [ ] Hyprland

## Proposed Solution

## Alternatives/Existing Solutions

The issue names no files, tests, or entry points. Begin by inventorying the numerical widgets and clarifying whether each needs historical data and a graph; done means graph versions exist for the agreed widget set across all compositors.

Written by the indexing model from the issue text.