setup: prepare for pypi upload
- add classifiers informations,
- add the content of the README file as long_description,
- add configure_urls.
add build/ to the gitignore file
Migrated from D477 (view on Phabricator)
Staging instance, all changes can be removed at any time
add build/ to the gitignore file
Migrated from D477 (view on Phabricator)