test: add test case for r

add keep alive parameter

other: merge 3.0

reload state window state

docs:add doc for schemaless

Fix: TD-25408

fix(stream): dump results to sink node before paused.

fix(stream): dump results to sink node before paused.

Fix/td 25466

* docs: add qstudio in 3rd parties list

* docs: fix qstudio link

fix: restore user privilege processing if the rows generated by the u…

fix:add committed & seek process logic

fix:add committed & seek process logic

fix: run sim cases on windows

check update data

fix(stream): set the correct end key of delete block.

fix(stream): kill task when pause the stream execution.