Add support for Apple's DCLM-Baseline-7B model

[minipasila]

Model description

This is a new model released by Apple using a new framework called "openlm" so it doesn't work with Huggingface Transformers currently.

Open source status

• The model implementation is available
• The model weights are available

Provide useful links for the implementation

https://huggingface.co/apple/DCLM-Baseline-7B Link to the model weights.
https://github.com/mlfoundations/open_lm Link to the model framework.
https://github.com/mlfoundations/dclm
https://arxiv.org/abs/2406.11794 Link to the paper.

[amyeroberts]

cc @ArthurZucker

[shauray8]

Hey @amyeroberts, I can have a look at this if it's one of the projected additions to the library.

[stephanpeitz]

This seems to be a decent workaround: mlfoundations/open_lm#291