enh: support client merge policy

Merge pull request #17035 from taosdata/fix/ZhiqiangWang/TD-18042-close-default-gtest-compile-and-docker-build

build: close default gtest compile and docker

fix: add more log for mnode

fix(tsc): fix invalid free

`end` is used as a key word in `case when` clause

test: case for drop topic

fix: rand time series calculation to dismiss false offline

doc: add social media links to readme (#17016)

fix(tmq): save ntb check to another tb

fix(query): update remove check condition.

feat: update taostools cf1df1c for3.0

fix: change qworker async destroy issue

fix: subplans under set operator use different group ids

enh(stream): blocklist do not copy

* docs: update csharp connector status

* docs: fix csharp ws bulk pulling

* docs: clarify database param is optional to websocket dsn

feat: case when expression

added twitter, linkedin, and youtube links in addition to discord link