Add cpu usage chart

[Kathenae]

CPU usage chart

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This pull requests add a cpu usage chart to the diagnostics page, allowing users to view the system wide cpu usage percentage and update the charts every 5 seconds.
Changes:

• added psutil to the main requirements.txt and coreplugins/diagnostics/requirements.txt.
• Modified and Refactored coreplugins/diagnostics/plugin.py to retrieve the system wide CPU usage and also exposed an api endpoint that returns all diagnostics information the plugin uses.
• Modified coreplugins/diagnostic/templates/diagnostic.html to include a donut chart that displays the CPU usage percent.
• Refactored existing code to support updating the charts every 5 seconds with information retrieved using the exposed api endpoint.

Note: The cpu usage stats is retrieved using the psutil library which is considered cross-platform but i personally have not tested this in other operating systems so not sure what the behavior would be there.

this PR is related to this #1341 issue

[pierotofy]

Thanks @Kathenae , 🙏 I've made some small adjustments, but otherwise looks great.

I'll merge this by tonight.

[Kathenae]

Thanks!

…

On Thu, May 18, 2023 at 10:28 PM Piero Toffanin ***@***.***> wrote: Thanks @Kathenae <https://github.com/Kathenae> , 🙏 I've made some small adjustments, but otherwise looks great. [image: image] <https://user-images.githubusercontent.com/1951843/239373210-1ae38eef-9a90-46f5-8073-dbe834d7a2ba.png> I'll merge this by tonight. — Reply to this email directly, view it on GitHub <#1344 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AU5FUK46E4QDH26SMNJPSQTXG2A55ANCNFSM6AAAAAAYGYUZKQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>