feat(stream): snode

Revert "fix(query): handle partition by in table scan operator"

teat: supplement  muti-branch for testcase histogram.py

enh: opt query mem

fix: use the relative pos during searching in walScanLogGetLastVer

fix: split vgroup

fix: failed to start unitest in mac

fix: del upx

* doc: driver-go support stmt via WebSocket

* docs: fix typos
Co-authored-by: Shuduo Sang <sangshuduo@gmail.com>

fix: avoid deadlock

fix: add more ut cases and fix issues

docs: refine taos.cfg format