* docs: update csharp connector status

* docs: fix csharp ws bulk pulling

* docs: clarify database param is optional to websocket dsn

feat: case when expression

fix: restore vnodes in multi-threads

enh: add queryRsmaTolerance conf for rsma query

fix: fix client memory leak

fix: some parser problems

enh: add oper name while execute 'show transaction'

refactor(query): do some internal refactor about  the filter  and  interp  query.

fix(stream): data block capacity

fix(tsc):avoid invalid code

fix: avg function data scan optimization

fix: fix nchar compare issue

fix: request free sequence problem

* test(docs):update docs-example file structure

* test(docs):update docs-example references under zh and en