merge:from 3.0

Update 02-database.md

Use the same database name "db_name" in all the examples;
"SHOW CREATE DATABASE db_name" should be run with \G, otherwise the output is not complete.

ci:add stream ci

docs:fix docs table format

docs:fix documents confusing wording

docs: latest timestamp allowed when inserting data

* fix: update taos-tools 560d0b5

* fix: update taos-tools a0234fe

* fix: update taos-tools 0aa69f9

* fix: update taos-tools c4a567b

Feat/ly stream stable

fix(query): protect read snap with reader mutex when closing reader

* fix: update taos-tools 560d0b5

* fix: update taos-tools a0234fe

feat: explain insert select

enh: add event_window test case

enh: split vgroup

* fix: optimize taosbenchmark data preparing for sml json

* fix: update taos-tools 5c5e79f

* fix: update taos-tools 298a30d

* fix: taos-tools 143b9e4

* fix: update taos-tools 0b56d15

* fix: update taos-tools 7375f23

* fix: update taos-tools eaf2309

* fix: update taos-tools 723f696

* fix: update taos-tools c9be106

* fix: update taos-tools 9b8975b

* test: update taos-tools 3309b9d

* test: update taos-tools d93cd23

* fix: update taos-tools 6632796

* fix: update taos-tools bd43034

* test: fix sml_json_alltyps.py according to taosbenchmark change

* test: fix sml_json_alltypes test case

* fix: update taos-tools 181bcac

fix(query): reset snap to null after untaking mem snap