fix(query): fix memory leak.

fix: the message is repeatedly compressed when redirect

enh(wal): add debug log

fix:Direct leak in timewindowoperator.c

docs: fix heading level

fix: remove double free one-liners

fix: avoid invalid vgroup id

fix:  crash caused by elect null and issues found in asan

fix: crash caused by stream fill

test: crash_gen auto run for whole day 

fix: init/free SBatchDeleteReq for tsma

docs: add TDengine Knowledge Map

test: add asan case

fix [ASAN] memory leak while tdbRealloc

doc: updated contribution guidelines