How can I create a feature request for QUALIFY clause into PostgreSQL?

Hey,

I was very happy learn about QUALIFY clause in BigQuery <https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#qualify_clause> today.

I have used window functions usually with subqueries like this:
SELECT * FROM (
SELECT
*,
ROW_NUMBER OVER (PARTITION BY something ORDER BY modified_date DESC) AS row_number
FROM table_name
)
WHERE row_number = 1

With QUALIFY it's much more ergonomic and cleaner to do the same thing.
SELECT *
FROM table_name
QUALIFY ROW_NUMBER() OVER (PARTITION BY something ORDER BY modified_date DESC) = 1

QUALIFY is also better since it doesn't include extra column row_number to the result.

Where should I send message so that Postgres maintainers would consider adding this into the TODO page: https://wiki.postgresql.org/wiki/Todo <https://wiki.postgresql.org/wiki/Todo>

Thanks in advance,
Onni Hakala