Tuneapi

-----

- Standardise ``tuneapi.types.chats.ModelInterface`` to have ``model_id``, ``api_token`` added to the base class.

-----

- Fix bug in Tune proxy API where incorrect variable ``stop_sequence`` was sent instead of the correct ``stop`` causing
incorrect behaviour.
- bump dependency to ``protobuf>=5.27.3``
- remove ``__version__`` from tuneapi package
- remove CLI entrypoint in ``pyproject.toml``

-----

- Add ability to upload any file using ``tuneapi.endpoints.FinetuningAPI.upload_dataset_file`` to support the existing
way to uploading using threads.

-----

- Fix bug in the endpoints module where error was raised despite correct inputs

--------------------

In this release we have moved all the Tune Studio specific API out of ``tuneapi.apis`` to ``tuneapi.endpoints`` to avoid
cluttering the ``apis`` namespace.

.. code-block:: patch

- from tuneapi import apis as ta
+ from tuneapi import endpoints as te
...
- ta.ThreadsAPI(...)
+ te.ThreadsAPI(...)

- Add support for finetuning APIs with ``tuneapi.endpoints.FinetuningAPI``
- Primary environment variables have been changed from ``TUNE_API_KEY`` to ``TUNEAPI_TOKEN`` and from ``TUNE_ORG_ID``
to ``TUNEORG_ID``, if you were using these please update your environment variables
- Removed CLI methods ``test_models`` and ``benchmark_models``, if you want to use those, please copy the code from
`this commit <https://github.com/NimbleBoxAI/tuneapi/blob/2fabdae461f4187621fe8ffda73a58a5ab7485b0/tuneapi/apis/__init__.py#L26>`_

------

- Fix bug where function response was tried to be deserialised to the JSON and then sent to the different APIs.