fix(query): fix bug in calculating the aggregate function with constant numeric value as input parameter.

refactor: vnode

feat(query): support timezone function and now/today function arithmetic operation in select clause

enh: window clause validity check

refactor: vnode

fix(build): make install.

* [TD-13558]<feature>: taos shell refactor

add taosTools as submodule

* add tools/taos-tools

* add more client interface for taosTools compile

* update taos-tools

* update taos-tools

* refactor shell

* [TD-13558]<feature>: taos shell test speed

* [TD-13558]<feature>: taos -n startup works

* taos -n rpc works

* taos -n server works

* cleanup code since no endPort in 3.0

* update taos-tools

* [TD-13558]<feature>: taos -C works

* improve taos shell -c WIP

* update taos-tools

* add demoapi.c

* adjust show databases result for 3.0

* test: add platform logic

* add nchar

* adjust taos_fetch_lengths

* print fields

* remove show databases check from insert cases

* fix lua example compile for 3.0

still not work

* remove lua.py from smoketest

* use get_column_data_offset() to get offset and convert length

* add int, float, timestamp value convert

fix(build): exec output build bin.

refactor: vnode