Vertically arranged CPU % with graphs?

[alshdavid]

Hi, first off thank you for making this utility!

When I am looking at CPU utilization, I'd like to have more insight into the per-core utilization. Currently this is how I configure Zenith when focusing on CPU usage

It would be great if the CPU% on the left hand side could be configured so they are stacked vertically, perhaps with a horizontal bar chart of their own

Something like this:

[bvaisvil]

Interesting idea. Looks like something similar is possible in ratatui. I'm not sure when I'll get to this, but I'm also happy to accept a PR for it.