Add NVIDIA GPU Stats plugin

[MauGaP]

Adds NVIDIA GPU Stats, a native OpenAction plugin for displaying NVIDIA GPU stats on Linux.

Actions

• GPU Usage (%)
• GPU Temperature (°C)
• GPU Memory (GB)
• GPU Power (W)

Highlights

• Native Rust plugin using tokio::process around nvidia-smi.
• Per-button customisable background: solid colour or radial gradient with separate balance and softness controls.
• Optional progress indicator on the percentage actions (GPU Usage and GPU Memory): arc speedometer (300° gauge spanning compass 210°-150°) or bottom bar (rounded pill).
• Property Inspector hides the bar/arc controls for actions where they don't apply (Temperature, Power).
• Linux only for now; requires the proprietary NVIDIA driver so that nvidia-smi is available on $PATH.

Repository checklist

• openaction topic on the repository
• MIT licensed
• Tagged release (v0.2.0) with installable .zip
• Entry placed in the native section, alphabetical by repo URL (between kahikara and mdvictor)
• 144×144 RGBA icon at icons/dev.maugap.oanvgpustats.png

Note on rename (v0.2.0)

Per reviewer feedback, the plugin was renamed from "GPU Stats" → "NVIDIA GPU Stats" (UUID dev.maugap.oagpustats → dev.maugap.oanvgpustats, repo openaction-gpu-stats → openaction-nvidia-gpu-stats) to make the NVIDIA-only scope explicit and avoid user confusion.

[Terrorwolf01]

Would it be an idea to rename the plugin, to show, that it only works with NVIDIA Devices?
Otherwise it will come to confusions why its not working.

[MauGaP]

great idea, I was meaning to add support to AMD and Intel in the future, but since I don't have a machine with those. I think it would be best to create different plugins in the future. I'll update everything.

[MauGaP]

Done — pushed v0.2.0 with the rename:

• Plugin name: GPU Stats → NVIDIA GPU Stats
• UUID namespace: dev.maugap.oagpustats.* → dev.maugap.oanvgpustats.*
• Repo: openaction-gpu-stats → openaction-nvidia-gpu-stats
• Release zip: dev.maugap.oanvgpustats.zip

This PR has been updated accordingly (catalogue entry, icon filename, title/body). Thanks for the suggestion @Terrorwolf01!

[nekename]

What features does this plugin provide over the existing Graphs (https://marketplace.tacto.live/plugin/com.victormarin.graphs) and Redline Monitor (https://marketplace.tacto.live/plugin/com.kahikara.opendeck-redline) plugins which have Nvidia GPU support?

[MauGaP]

What features does this plugin provide over the existing Graphs (https://marketplace.tacto.live/plugin/com.victormarin.graphs) and Redline Monitor (https://marketplace.tacto.live/plugin/com.kahikara.opendeck-redline) plugins which have Nvidia GPU support?

Redline has a lot of information in a single tile, and mixes stats, (as an example GPU has a number for the load, and a bar that is configurable between temperature, load and power). not very easy to get the information cleanly visible.

and I didn't know graph could do what it does, lol. I tried just now, and my only critique would be that it's hard to recognize the text in front of the graphic. (that is why I followed the clean look you had used for your System Information (https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh?hl=en) and tweeked it a bit.

If you want, you can try it before deciding.

I'll upload images of how the other plugins look on my device (Ajazz Akp03:
Redline:

Graph: (pretty good)

This plugin:

[nekename]

Would you be able to either tweak your text display settings from the OpenDeck editor, or contribute improvements to the Graphs plugin?

[MauGaP]

yes! I'll do that. should I close this PR?
There is another one that I created to add CPU temperature to the system information plugin, that it is already covered by Graph. I will close that one too.

edit: by 'that' I mean I will contribute to Graph plugin.

[MauGaP]

Closing this PR in favor of using Graph, I will open a new PR with the changes I need.

[nekename]

Thanks, it really helps to have fewer plugins that do the same thing, both to avoid confusion and also to provide as many features as possible with only one install