GPU support for steadystate_fourier

[Fe-r-oz]

Checklist

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Description

Describe the proposed change here.

Related issues or PRs

[Fe-r-oz]

Closing this PR to maintain the limit of 4 open PRs at a time. Apologies for not being aware of this rule earlier. Edit: Upon rechecking, I currently have 2 open PRs in total. 😊

[albertomercurio]

So are you planning to open it again?

[Fe-r-oz]

Thank you for checking! I think keeping this closed could be a nice opportunity for others to explore the library and contribute! 😊 Of course, I’ll defer to your judgment on what’s best!