Don't rely on `refs/convert/duckdb` anymore (#3166)
* wip get_index_file_location_and_build_if_missing
* bump filelock
* add + bump duckdb in lobcommon
* add polars to libcommon
* fix full_text_search
* fix imports and duckdb commands from parquet files
* use parquet metadata response
* unused var
* fix ci
* style
* maybe fix stats
* fix histograms tests
* style
* bump polars
* fix test
* include all values in hist
* fix e2e stats test
* fix last stats error
* fix test
* enable for /search too
