Add icon for @edde746/Plezy (WinGet)

[Steven Y (stevenya97)]

• I have read the contributing guidelines, and I agree with the Code of Conduct.
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• Have you tested that the committed code can be executed without errors?
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Adds the official icon from the edde746/Plezy project repo. winget reports Inno installer type. Looks like either the author didn't submit it as part of Inno setup parameters or winget manifest stripped it out.