[Feature requests] Support for Custom Action Buttons

[NullEqualsZero]

Hi there 👋

Thanks for the awesome work on UpSnap — it’s been super helpful for managing my networked devices! I believe it would be great to have the ability to add custom action buttons for devices in UpSnap, in addition to the existing Wake and Sleep buttons.

For example, I’d like to add a Logout button that can trigger a custom action on the device.

Thanks for considering this feature!