add test cases

tests/script/tsim/query/multires_func.sim

+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/exec.sh -n dnode1 -s start
+sql connect
+
+sql create database test
+sql use test
+sql CREATE TABLE `tb` (`ts` TIMESTAMP, `c0` INT, `c1` FLOAT, `c2` BINARY(10))
+
+
+sql insert into tb values("2022-05-15 00:01:08.000", 1, 1.0, "abc")
+sql insert into tb values("2022-05-16 00:01:08.000", 2, 2.0, "bcd")
+sql insert into tb values("2022-05-17 00:01:08.000", 3, 3.0, "cde")
+
+
+#sleep 10000000
+system taos -P7100 -s 'source tsim/query/t/multires_func.sql' | grep -v 'Query OK' | grep -v 'Client Version' > /tmp/multires_func.result
+system echo ----------------------diff start-----------------------
+system git diff --exit-code --color tsim/query/r/multires_func.result /tmp/multires_func.result
+system echo ----------------------diff succeed-----------------------

tests/script/tsim/query/r/multires_func.result

+Copyright (c) 2022 by TDengine, all rights reserved.
+
+taos> source tsim/query/t/multires_func.sql
+taos> use test;
+Database changed.
+
+taos> select count(*) from tb\G;
+*************************** 1.row ***************************
+count(*): 3
+
+taos> select last(*) from tb\G;
+*************************** 1.row ***************************
+ts: 2022-05-17 00:01:08.000
+c0: 3
+c1: 3.0000000
+c2: cde
+
+taos> select last_row(*) from tb\G;
+*************************** 1.row ***************************
+ts: 2022-05-17 00:01:08.000
+c0: 3
+c1: 3.0000000
+c2: cde
+
+taos> select first(*) from tb\G;
+*************************** 1.row ***************************
+ts: 2022-05-15 00:01:08.000
+c0: 1
+c1: 1.0000000
+c2: abc
+

tests/script/tsim/query/t/multires_func.sql

+use test;
+select count(*) from tb\G;
+select last(*) from tb\G;
+select last_row(*) from tb\G;
+select first(*) from tb\G;