Request of support for Oracle OCI Generative AI new models

[engchina]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Time flies, old models of Oracle OCI Generative AI will be Deprecated, new models need be supported.
From oracle documents: https://docs.oracle.com/en-us/iaas/Content/generative-ai/chat-models.htm#chat-models

Command R (cohere.command-r-16k) ([Deprecated](https://docs.oracle.com/en-us/iaas/Content/generative-ai/deprecating.htm#retired-models))
Command R+ (cohere.command-r-plus) ([Deprecated](https://docs.oracle.com/en-us/iaas/Content/generative-ai/deprecating.htm#retired-models))
Command R 08-2024 (cohere.command-r-08-2024) (New)
Command R+ 08-2024 (cohere.command-r-plus-08-2024) (New)

2. Additional context or comments

Also, new regions of Oracle OCI should be supported, like Oracle Osaka Region.

From oracle documents: https://docs.oracle.com/en-us/iaas/Content/generative-ai/overview.htm

3. Can you help us with this feature?

• I am interested in contributing to this feature.