add --trust_remote_code for text generation examples

[yangulei]

Add --trust_remote_code argument for text generation examples to allow the custom models defined on the Hub in their own modeling files.

[ssarkar2]

LGTM otherwise, minor comment regarding the help message

[regisss]

This one is tricky as remote code offers absolutely no guarantee of compliance with the Transformers API. I've pushed back against it in the past because this example will for sure fail with at least a few models with remote code out there.
I'm okay with allowing it, but let's log a warning that clearly states that trust_remote_code is true so this example may fail as this model doesn't necessarily follow the Transformers API.

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[ImtiazSajwani]

Thanks for the quick workaround but I am still seeing the error

$git status
On branch remote_code

File "/usr/local/lib/python3.10/dist-packages/transformers/dynamic_module_utils.py", line 621, in resolve_trust_remote_code
raise ValueError(
ValueError: Loading requires you to execute the configuration file in that repo on your local machine. Make sure you have read the code there to avoid malicious use, then set the option trust_remote_code=True to remove this error.
[

[yangulei]

@ImtiazSajwani Could you share the command to reproduce this error?