Update .gitignore

• https://gist.github.com/GhostofGoes/94580e76cd251972b15b4821c8a06f59
• https://github.com/github/gitignore/blob/main/Python.gitignore

Maintain poetry.lock ignored.

changed milestone to %Backlog

added Dev Env Easy pick labels

changed milestone to %0.12.0

assigned to @moul

changed the description

mentioned in commit d03475de

mentioned in merge request !252 (merged)

closed with merge request !252 (merged)