[BUG] missing dependency "packaging"

[twoyoung]

Describe the bug

After fresh install - there seems to be a missing dependency on packaging.

 File "/csse/users/yya164/Documents/taichi-splatting/taichi_splatting/data_types.py", line 4, in <module>
    from tensordict import tensorclass
  File "/local/miniforge3/envs/torch/lib/python3.11/site-packages/tensordict/__init__.py", line 6, in <module>
    from tensordict._lazy import LazyStackedTensorDict
  File "/local/miniforge3/envs/torch/lib/python3.11/site-packages/tensordict/_lazy.py", line 25, in <module>
    from tensordict._td import _SubTensorDict, _TensorDictKeysView, TensorDict
  File "/local/miniforge3/envs/torch/lib/python3.11/site-packages/tensordict/_td.py", line 25, in <module>
    from tensordict.base import (
  File "/local/miniforge3/envs/torch/lib/python3.11/site-packages/tensordict/base.py", line 40, in <module>
    from tensordict.utils import (
  File "/local/miniforge3/envs/torch/lib/python3.11/site-packages/tensordict/utils.py", line 44, in <module>
    from packaging.version import parse

[vmoens]

Thanks for reporting! I'll add packaging to the tensordict deps!