Add venn to Data Quality

[KonMam]

Adds venn to Data Quality.

venn is a single static binary that takes row-level keyed diffs of tabular
datasets: parquet, CSV, NDJSON, directories and globs, and Iceberg or Delta
tables, including one format against another. It reports added, removed and
changed rows with per-column attribution, exits 0/1/2 for CI, and streams
inputs larger than memory rather than loading either side.

• MIT licensed, pure Go, no runtime dependencies
• Tagged releases with a changelog, published to Homebrew, PyPI and ghcr.io
• Reads Iceberg and Delta including merge-on-read deletes and deletion vectors

The section's first entry, data-diff, is archived, and it covered databases
rather than files and lake tables, so this is not a duplicate of it.