my zombie killcam mod that is a work-in-progress and open sourced. this may work off plutonium but this was only supported for plutonium in the first place.
you can download the latest version here:
https://github.com/mjkzy/t6-zm-killcams/releases/tag/latest
cmtfrosty - menu base
cabcon - bits of code here and there but not major
birchy - killcam help & killcam overlay
chase - github actions & auto compile