* Add CI for assert-allclose.

* Update CI script.

* Update check_approval.

* Specify the destination path for the git diff.

* Add test samples.

* Add CI for assert-allclose with \n.

* Update test samples.

* Update ALL_ADDED_LINES_IN_TARGET_PATH.

* update GitHub username to userid, test=document_fix

* add rfc as a specification, test=document_fix

* try to integrate single and multiple rows together, test=document_fix

* remove duplicate dirs, test=document_fix

* add anchor `#background`, test=document_fix

* remove original scripts, test=document_fix

* remove test files, test=document_fix
Co-authored-by: NSigureMo <sigure.qaq@gmail.com>