(docs) add example configs to proxy

litellm/proxy/example_config_yaml/aliases_config.yaml

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+model_list:
+  - model_name: text-davinci-003
+    litellm_params:
+        model: ollama/zephyr
+  - model_name: gpt-4
+    litellm_params:
+        model: ollama/llama2
+  - model_name: gpt-3.5-turbo
+    litellm_params:
+        model: ollama/llama2
+
+
+# request to gpt-4, response from ollama/llama2
+# curl --location 'http://0.0.0.0:8000/chat/completions' \
+# --header 'Content-Type: application/json' \
+# --data ' {
+#       "model": "gpt-4",
+#       "messages": [
+#         {
+#           "role": "user",
+#           "content": "what llm are you"
+#         }
+#       ],
+#     }
+# '
+#
+
+# {"id":"chatcmpl-27c85cf0-ab09-4bcf-8cb1-0ee950520743","choices":[{"finish_reason":"stop","index":0,"message":{"content":" Hello! I'm just an AI, I don't have personal experiences or emotions like humans do. However, I can help you with any questions or tasks you may have! Is there something specific you'd like to know or discuss?","role":"assistant","_logprobs":null}}],"created":1700094955.373751,"model":"ollama/llama2","object":"chat.completion","system_fingerprint":null,"usage":{"prompt_tokens":12,"completion_tokens":47,"total_tokens":59},"_response_ms":8028.017999999999}%              

litellm/proxy/example_config_yaml/azure_config.yaml

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+model_list:
+  - model_name: gpt-4-team1
+    litellm_params:
+      model: azure/chatgpt-v-2
+      api_base: https://openai-gpt-4-test-v-1.openai.azure.com/
+      api_version: "2023-05-15"
+      azure_ad_token: eyJ0eXAiOiJ
+  - model_name: gpt-4-team2
+    litellm_params:
+      model: azure/gpt-4
+      api_key: sk-123
+      api_base: https://openai-gpt-4-test-v-2.openai.azure.com/
+  - model_name: gpt-4-team3
+    litellm_params:
+      model: azure/gpt-4
+      api_key: sk-123
+

litellm/proxy/example_config_yaml/langfuse_config.yaml

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+model_list:
+  - model_name: gpt-3.5-turbo
+
+litellm_settings:
+  drop_params: True
+  success_callback: ["langfuse"] # https://docs.litellm.ai/docs/observability/langfuse_integration
+