WIP: Add support for ACPI platform profiles

This allows to switch between different ACPI platform profiles, such as "low power", "cool", "balanced", or "performance".

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This uses https://patchwork.kernel.org/project/linux-acpi/patch/20201218174759.667457-2-markpearson@lenovo.com/

• TODO test on supported hardware
• TODO: docs
• TODO: tests