Add judgment for whether model_id is a local path to speed up local model loading

[chenwanqq]

In the original logic of marcos.os, regardless of whether model_id is a valid ID on Hugging Face, a request to Hugging Face is made, and if the request fails, it then attempts to load from the local environment. However, if the network environment cannot connect to Hugging Face normally, this step becomes very slow, with each API call attempt taking tens of seconds. Therefore, I have added a workaround here: first, it checks whether model_id is an absolute path. If it is, it directly loads from the local environment. This simple modification directly reduces the time spent on load_model_from_hf from 1 to 2 minutes to just a few microseconds 🤣
Edit: Now I change to check if model_id exists as a local path

[github-actions]

Code Metrics Report

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 Total                 220        48155        42154         1990         4011
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[EricLBuehler]

Thank you for adding this! I think that if we check that the file exists, this may be more flexible. Is there a reason why you chose to use is_aboslute rather than exists?

[chenwanqq]

Thank you for adding this! I think that if we check that the file exists, this may be more flexible. Is there a reason why you chose to use is_aboslute rather than exists?

Hhh just not sure whether it would break some old logics. And If it is not, we can just check if model_id exists as a local path

[EricLBuehler]

Thank you! We keep the logic for file path checking in these macros, so this should be fine.