suspend to idle support

From: Oleksandr Kryvulia <shuriku_at_shurik.kiev.ua>
Date: Mon, 15 Jan 2024 17:24:02 UTC
Hello,
What is a status of support suspend to idle? I found only two related 
reviews D17675 and D17676 and no more any information. It is a very 
desirable thing on modern laptops, where s3 is not supported like my X1 
Carbon gen11[1].

[1] https://wiki.freebsd.org/Laptops/Thinkpad_X1_Carbon