Resolve "Revision HDF5 chunk size"
Closes #3052 (closed)
This MR improves HDF5 chunking and allows configuring it from the Bliss side through
SCAN_SAVING.writer_object. The parameters for the Nexus writer are
chunk_size: the maximal chunk size in MB. Smaller datasets are not chunked unless they require compression. Default: 1 MB
compression_limit: datasets larger than this limit will be compressed. Default: 1 MB
compression_scheme: used in case the dataset size is larger than
chunk_split: in case the dataset size is larger than
chunk_size, the inner dataset dimensions are split in this many parts. Default: 4.