Integrate topgrade with protonup

[dtantono]

I want to suggest a new step

Which tool is this about? Where is its repository?

https://github.com/AUNaseef/protonup

Which operating systems are supported by this tool?

Linux

What should Topgrade do to figure out if the tool needs to be invoked?

Which exact commands should Topgrade run?

I want to suggest some general feature

Topgrade should integrate with protonup for Linux gaming https://github.com/AUNaseef/protonup

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