[Suggestion]: log Watts usage

[Katehuuh]

log watts consommation using codecarbon.

Quick test to give total Watts on any OS: pip install codecarbon, codecarbon init, codecarbon monitor to have a UI tracking dashboard from current global usage OS.

Implementation in LLaMA-Factory per function could be as extra_require optional with pip install -e .[codecarbon] or pip install -e .[metrics], more in /examples and would end in README.md of section Watts/Carbon Emitted/cost estimation.