fix: fix parquet saving of distributions (specify engine, write metadata, ...)

scripts/sp2xr_pipeline.py

@@ -389,6 +389,9 @@ def main():
             merged_ddf.to_parquet(
                 f"{run_config['output']}/hists_{run_config['dt']}s",
                 partition_on=["date"],
+                engine="pyarrow",
+                write_index=True,
+                write_metadata_file=True,
                 append=True,
                 schema="infer",
             )