V3 row lineage metadata parsing of `first-row-id` in `snapshots`

[smaheshwar-pltr]

Feature Request / Improvement

https://github.com/apache/iceberg-python/pull/1554 that introduced V3 read support reads next_row_id on table metadata. We also need (see spec) the first-row-id field (now a required field for V3) to be read within the snapshots list of V3 metadata.

[github-actions[bot]]

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