feat(litellm-proxy): Add support for o1-mini and o1-preview models (

#676)

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> [!IMPORTANT]
> Add support for `o1-mini` and `o1-preview` models in
`litellm-config.yaml` with specific configurations.
> 
>   - **Models**:
> - Add support for `o1-mini` and `o1-preview` models in
`litellm-config.yaml`.
> - Configure `o1-mini` and `o1-preview` with `model` names
`openai/o1-mini` and `openai/o1-preview` respectively.
> - Both models use `os.environ/OPENAI_API_KEY` for `api_key` and are
tagged as `paid`.
> 
> <sup>This description was created by </sup>[<img alt="Ellipsis"
src="https://img.shields.io/badge/Ellipsis-blue?color=175173">](https://www.ellipsis.dev?ref=julep-ai%2Fjulep&utm_source=github&utm_medium=referral)<sup>
for 12137df. It will automatically
update as commits are pushed.</sup>

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llm-proxy/litellm-config.yaml

@@ -31,6 +31,18 @@ model_list:
     tags: ["paid"]
     api_key: os.environ/OPENAI_API_KEY
 
+- model_name: o1-mini
+  litellm_params:
+    model: openai/o1-mini
+    api_key: os.environ/OPENAI_API_KEY
+    tags: ["paid"]
+
+- model_name: o1-preview
+  litellm_params:
+    model: openai/o1-preview
+    api_key: os.environ/OPENAI_API_KEY
+    tags: ["paid"]
+
 # Anthropic models
 - model_name: "claude-3.5-sonnet"
   litellm_params: