Imports pose estimation data from netCDF/HDF5 files created by the movement Python package.
Details
The movement package stores pose estimation data in a specific netCDF/HDF5 structure
with datasets for individuals, keypoints, position coordinates, confidence
scores, and time. This function reads that structure and reshapes it into
a tidy aniframe format. The underlying tracking software outputs
image (top-left) coordinates, so the reader reflects y to
bottom_left before returning.