Move away from jimp

[sharkaccino]

jimp was last updated roughly 2 years ago, and recently, there's been a security vulnerability found in one of it's dependencies. according to this conversation on their repo, the author needs new maintainers.

vector (at least, originally) uses image processing to color and/or rotate icon images which makes assets a bit easier to set up. iirc, earlier versions also used jimp for various other image processing operations.

i'd like to know what viable alternatives there are. sharp seems to be a first choice for a few people, but im not sure if/how it can work with animated gif images.