doc: update 3.0 doc

fix: fix explain row buffer size issue

fix: libuv compile error with gcc 11+

fix:fix explain analyze validate issue

fix(query): fix stream session window out of order data agg function result error

fix: create block data for last files

os: fix fseek error

fix: fill desc order support

fix(query): init the blockdata before load data.

fix: the syntax problem of querying the state value in the state window

refactor(sync): close receiver when become leader

enh: async launch tasks

fix: use new API tBlockDataInit to init pBlockData

result error

TD-18287

fix(query): fix pthread_create memleak in when shell exit