* [TD-3827]<fix>: taosdemo query argument miss lead segfault.

* [TD-3827]<fix>: taosdemo query argument miss lead segfault.

refactor variable.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

[TD-3800]<test>: add test case for query last(*)

Co-authored-by: Nplum-lihui <huili@taosdata.com>

Fix/query

[TD-3780]taos crash on windows issue

Revert "[TD-3079]<enhance>: use multi-level storage with vnode's wal files"

[TD-3079]<enhance>: use multi-level storage with vnode's wal files

free mem

[TD-3768]crash issue by query cancelled

[TD-3732]mem overflow issue

[TD-3750]rebuild topbottom struct

[TD-3755]too much columns tip info

[TD-3774]dulicated CQ created when wal is re-executed issue

Run performance test on master branch

[TD-3587]<test> add case for TD-3587 to CI

Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

[TD-3766]<fix>: fix fsync alter calculation

[TD-2986]<test>: add demo example into CI

[TD-3757]fix client crash issue

[TD-3759]taosd mem leak issue

* [TD-3401]<fix>: taosdemo query statistic.

refactor func name.

* [TD-3401]<fix>: taosdemo query statistic.

refactor func name 2.

* [TD-3401]<fix>: taosdemo support query statistic.

implementation.

* cleanup
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

Moved over changes from feature/crash_gen to feature/crash_gen_master