[td-6395]<enhance>: use the keyword "EVERY" instead of "INTERVAL" in case of multiple point interpolation query.

* [TD-6294]<fix>: taosdemo support long arg

fix conflict with develop branch.

* fix few words.

* declare default child tables number.

[ci skip] update cfg key

[td-6366]fix top no header issue

[TD-6336]<fix> reproduce and fix core

minor changes for topicBinaryLen

[TD-6201]<fix> bool not support in outer query

[td-6384]fix irate wrong value issue

[ci skip]disable crash_gen test

[TD-6167]<test> stmt c api test

[td-6320]fix bigint overflow issue

* better msg for create child table.

* just add one new line.

Hotfix/td 6272

Fix/query

 fix the show varibels case

merge from 2.0 into master

[TD-6336]<fix> insert into file cause core

[TD-6330]<fix> fix free error