* [doc] Migrate develop docs from website
developer should also into main repo, because
development setup should follow with the latest
code
* Add missing change from website
* [doc] Migrate dev doc from website repository
* Correct release language
* Fix license issue
* Add all images from website
* Delete unused images
* Add CI
* Fix ci
* fix ci
* Remove no need file
* Add latest commit from website
* correct img_utils.py script
* Remove unused imgs