jugs closeable, move chemitsry entities into chemsitry directory

[IProduceWidgets]

About the PR

Jugs could be spilled by mice (was that changed?) and revanents. This prevents that in a way that is player-actionable. i.e skill issue.

Why / Balance

better than just forbidding it imo. But also, consistencey with other containers.

Technical details

Media

• [x] I have added screenshots/videos to this PR showcasing its changes ingame, or this PR does not require an ingame showcase

Breaking changes

Changelog

:cl:

• tweak: Chemical jugs are now closeable.