Complete o3 model support (#8183)

* fix(o_series_transformation.py): add 'reasoning_effort' as o series model param

Closes https://github.com/BerriAI/litellm/issues/8182

* fix(main.py): ensure `reasoning_effort` is a mapped openai param

* refactor(azure/): rename o1_[x] files to o_series_[x]

* refactor(base_llm_unit_tests.py): refactor testing for o series reasoning effort

* test(test_azure_o_series.py): have azure o series tests correctly inherit from base o series model tests

* feat(base_utils.py): support translating 'developer' role to 'system' role for non-openai providers

Makes it easy to switch from openai to anthropic

* fix: fix linting errors

* fix(base_llm_unit_tests.py): fix test

* fix(main.py): add missing param

litellm/utils.py

@@ -2686,6 +2686,7 @@ def get_optional_params(  # noqa: PLR0915
     api_version=None,
     parallel_tool_calls=None,
     drop_params=None,
+    reasoning_effort=None,
     additional_drop_params=None,
     messages: Optional[List[AllMessageValues]] = None,
     **kwargs,
@@ -2771,6 +2772,7 @@ def get_optional_params(  # noqa: PLR0915
         "drop_params": None,
         "additional_drop_params": None,
         "messages": None,
+        "reasoning_effort": None,
     }
 
     # filter out those parameters that were passed with non-default values