class server config

add concept definition and introduction for advanced features

[14225] move docs to new plase

* adjust doc structure

* adjust doc structure

* modify sample code path

* remove out-dated links

* refine taostools section

* adjst descriptions

* fix typo

* fix taosBenchmark doc link

* update documentation20/cn/02.getting-started/docs.md

* [TD-13571]<docs>: fix outdated

16KB => 64KB

* udpate schemaless section

* fix typo

* refine doc

* [TD-13571]<docs>: fix outdated docs

Feature/td 14104

[TD-13414]<feature>: taos shell coredump when scalar function arithmeic operation has bool operands

TD-14196 fix alias name not equal if tsKeepOriginalColumnName is seted

* add taosbenchmark sample json csv files

* add taosbenchmark sample csv to install package

[TS-1330]<test>: update doc for regular expression

* [TD-13708]<test>:csharp connector subscribe test cases

* [TD-13708]<test>:fix indent

* [TD-13708]<test>:fix with comment

* [TD-13708]<test>:fix error info and uncomment database fixture dispose method

* [TD-13708]<test>:fix error info

* [TD-13708]<test>:fix error info,taos_errstr work for null point

[TD-14121]<fix>: script/general/compute/cast.sim failed on ARM64 Linux

fix core if subquery reslut is too large in unique function

Fix/td 14070  fix compare error if value is NULL with nchar and binary type