Uses a dedicated logger (for easier filtering / silencing) for
results output, and provides rough (module-level) stats in INFO but
detailed (test-level) in DEBUG.
Also updates the global query counter (`odoo.sql_db.query_counter`) to
update after each query rather than on close: with test cursors the
actual underlying counter is only rarely flushed.
closesodoo/odoo#95420
Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>