[Improvement]: Superhero fly state not saved to settings

[juhannnnnn]

Which feature

i'd like the superhero fly option to be saved so that it stays enabled everytime i load yimmenu. And the way the gravity gun is used is buggy. Sometimes it takes a while to launch an entity like after 5 or 6 secs or more. Also i would like an option for captured entities to remain physical even until they are launched.

Reason

For ease of use and for fixing the gravity gun bug.

Additional context

No response

[xiaoxiao921]

This is two issues at once, gonna reuse #3490 for the gravity gun issue.