Reimplement parquet I/O according to HATS plans

[hombit]

Feature request

With HATS, we plan to serialize nested columns as a set of list-columns and include metadata for reconstruction: astronomy-commons/lsdb#466

To support this, we could modify our custom to/read_parquet implementations accordingly. It is not yet clear where HATS will store metadata that maps list-columns back to their respective nested columns. Here, we can explore the possibility of storing this information within the parquet metadata.

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