Support for GLM in llama-cpp-python

[logan0116]

I noticed that llama-cpp has recently added support for chatglm3 and glm4, as detailed in this pull request.

I hope that llama-cpp-python can also provide support for these models.

Thank you for your continued hard work.

[abetlen]

@logan0116 should be available in the latest release (v0.2.82)