This PR adds settings to choose a Power Mode provider, which will detect if the system is in a paused/suspended state and avoid starting tasks while being suspended.
This currently only works for Windows, where the previous inplementation is named `NET` (for .NET) and the new mode is named `Native` and using the Windows documented approach with a hidden window that listens for `WM_POWERBROADCAST` messages.
The default is `Native` but can now also be disabled by choosing the `None` provider.
