poetry add xarray

fix cosypose evaluation:
Traceback (most recent call last):
  File "…/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "…/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "…/happypose/happypose/pose_estimators/cosypose/cosypose/scripts/run_full_cosypose_eval_new.py", line 10, in <module>
    from happypose.pose_estimators.cosypose.cosypose.evaluation.evaluation import run_eval
  File "…/happypose/happypose/pose_estimators/cosypose/cosypose/evaluation/evaluation.py", line 41, in <module>
    from happypose.pose_estimators.megapose.evaluation.meters.modelnet_meters import (
  File "…/happypose/happypose/pose_estimators/megapose/evaluation/meters/modelnet_meters.py", line 19, in <module>
    import xarray as xr
ModuleNotFoundError: No module named 'xarray'

pyproject.toml

@@ -63,6 +63,7 @@ tqdm = "^4.66.1"
 transforms3d = "^0.4.1"
 trimesh = "^3.23.5"
 webdataset = "^0.2.57"
+xarray = "^2024.3.0"
 
 [tool.poetry.extras]
 cpu = ["torch", "torchvision"]