temperature_fan: Add self-logging

[MRX8024]

Since temperature_fan has settings for upper/lower temperature thresholds, I see no reason not to add its logging.
For example, to avoid the situation of 'ADC out of range', but at the same time not find the reason in the log file.
This pr adds fan speed, actual and target temperature logging to klippy.log

Signed-off-by: Maksim Bolgov maksim8024@gmail.com

[github-actions]

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