feat: push condition to child projection

refactor(sync): add snapshot2 interface

refactor(wal)

fix: clean windows environment before test

refactor: stable mgmt

fix: make dnode sort stable

for 3.0

fix: fix stmt case issue

fix: fix stream crash issue

os: replace win qsort func

feat(query): add last_row function without cache

test:add test case for tmq

feat(wal): add api to check log existance