Add tab completion for table_rewrite's CREATE EVENT TRIGGER in psql

Author: Hou Zhijie
Discussion: https://postgr.es/m/OS0PR01MB5716DEFF787B925C4778228C94D69@OS0PR01MB5716.jpnprd01.prod.outlook.com

Author: michaelpq

src/bin/psql/tab-complete.c

@@ -3408,7 +3408,8 @@ psql_completion(const char *text, int start, int end)
 		COMPLETE_WITH("ON");
 	/* Complete CREATE EVENT TRIGGER <name> ON with event_type */
 	else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny, "ON"))
-		COMPLETE_WITH("ddl_command_start", "ddl_command_end", "sql_drop");
+		COMPLETE_WITH("ddl_command_start", "ddl_command_end", "sql_drop",
+					  "table_rewrite");
 
 	/*
 	 * Complete CREATE EVENT TRIGGER <name> ON <event_type>.  EXECUTE FUNCTION