Followup to #61535, this PR updates the OpenLineage listener to include SQL lineage reported by hooks.

For each SQL query, it parses inputs/outputs via the existing SQLParser, enriches facets (SQL job, external query), and emits dedicated START/COMPLETE (or FAIL) child OpenLineage events. When exactly one query was executed, the parsed metadata is also merged into the parent task's lineage event, for simplicity (but the separate events are always emitted).

Updated documentation template and Sphinx extension to better describe hook-level lineage capabilities and discover these new sql hook lineage hooks.

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