Manages parquet files using bionty-assets instance

[sunnyosun]

In addition to uploading ontology files, we could also upload the parquet files.

This will:

1. speed up the initial download for each entity if users only need to access .df() and .lookup(), as users will just download the parquet files
2. only when users access .ontology, the ontology file (owl, obo, etc) will be downloaded
3. guarantee the data lineage of the ontology file → parquet file