LiteLLM Minor Fixes and Improvements (09/10/2024) (#5618)

* fix(cost_calculator.py): move to debug for noisy warning message on cost calculation error

Fixes https://github.com/BerriAI/litellm/issues/5610

* fix(databricks/cost_calculator.py): Handles model name issues for databricks models

* fix(main.py): fix stream chunk builder for multiple tool calls

Fixes https://github.com/BerriAI/litellm/issues/5591

* fix: correctly set user_alias when passed in

Fixes https://github.com/BerriAI/litellm/issues/5612

* fix(types/utils.py): allow passing role for message object

https://github.com/BerriAI/litellm/issues/5621

* fix(litellm_logging.py): Fix langfuse logging across multiple projects

Fixes issue where langfuse logger was re-using the old logging object

* feat(proxy/_types.py): support adding key-based tags for tag-based routing

Enable tag based routing at key-level

* fix(proxy/_types.py): fix inheritance

* test(test_key_generate_prisma.py): fix test

* test: fix test

* fix(litellm_logging.py): return used callback object

litellm/proxy/management_endpoints/internal_user_endpoints.py

@@ -156,6 +156,7 @@ async def new_user(
         user_id=response["user_id"],
         user_role=response.get("user_role", None),
         user_email=response.get("user_email", None),
+        user_alias=response.get("user_alias", None),
         teams=response.get("teams", None),
         team_id=response.get("team_id", None),
         metadata=response.get("metadata", None),