* Add built-in function oct (#2115)

Signed-off-by: lawrshen <191220090@smail.nju.edu.cn>

* refine: use bit operations instead of strconv.FormatUint

Signed-off-by: lawrshen <191220090@smail.nju.edu.cn>

* add built-in string function bin

* refine test codes for bin func

* refine: use bit operations instead of strconv.FormatUint

* remove debug param

* add nightly static code analysis & ut coverage

Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>

* add decimal compare

* add Align Decimal using scaleDiff Batch function

* remove ut coverage check in ut

* remove debug param

* (aoe): optimization

* (tae): update for append node

* (tae): add exception state

* (tae): temp not check gc ops

* Add daily code analysis notify

* extend unittest timeout temporally

Co-authored-by: kutori <312856403@qq.com>
Co-authored-by: jiangxinmeng1 <51114574+jiangxinmeng1@users.noreply.github.com>

* add basic support for tpch in plan2

* fix static check error

* fix static check error

* fix unit test fail

* fix typo

* fix typo

* Add explain data structure and interface

* Develop SQL explain requirements

* Modify and optimize explain code

* Develop explain display feature

* Develop explain feature code

* modify query plan function FunctionSig

* Modify the method of traversal plan

Removed reference to old etcd versions

* ci optimize