feat(tsdb): delete time series data

fix: make least-squares buffer large enough to hold json result

[TD-15341]

fix: core dump due to state window scan backwards

docs: add docs-en

CI: put CI server config file on dispatcher

fix: apply function offset/forward step error when session window and order by ts desc

fix: order by column check error

fix: schemaless performance

docs: update index.md

* [TD-14358]<fix>: remove python connector from TDengine

* [TD-14358]<fix>: use standalone python connector

* add python clone in TDinternal

* git clean before checkout

* git clean before checkout

* fix: remove python connector

fix test requirements.txt

[TD-14358]

fix: result is incorrect in case of interval query with elapsed()

Co-authored-by: NShuaiQChang <changshuaiqiang@163.com>

modify default value of LossyColumns

* Update 05-taosbenchmark.md

* Update 05-taosbenchmark.md

* Update 05-taosbenchmark.md

fix: csum from subquery supertable on state_window is not allowed, just as diff

fix: two ts columns error when sample and interval

* docs: refine taosdump

[TD-14964]

* docs: update taosdump docs

* fix: typo of showing distro info

* fix: change cmake minimum required version to 3.0 in TSZ

Fix Deprecation message when cmake building:

CMake Deprecation Warning at deps/TSZ/CMakeLists.txt:1 (CMAKE_MINIMUM_REQUIRED):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.