[TD-5143]<test> adding test case about subquery

[TD-5399]<test>: update scripts for daily performance test

Fix the problem of parsing http protocol when the request header lacks spaces

Feature/query

Enhance/td 5395

* [TD-5398]<fix>: taosdemo 4096 columns table creation failed.

* change column name prefix from col to c for maxium column number to fix buffer length.

* fix test case for column name be shorter.

* use accurate buffer length.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

[TD-5255] <docs>: fix table names typo.

[TD-5324]<fix>:check max row bytes when alter tag/column width

* [TD-5300]<fix>: taosdemo stmt debug print.

* fix default iface is unknown.

* [TD-5136]<feature>: taosdemo simulate real senario.

* update test case according to taosdemo change

* adjust range of semi-random data.

* make demo mode use different tag name and value.

* change malloc to calloc for pid allocation.

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