There is an updated pull request by CrimsonKoba against master on the void-packages repository

https://github.com/CrimsonKoba/void-packages add_swaylock-effects
https://github.com/void-linux/void-packages/pull/26392

new package: swaylock-effects
https://github.com/mortie/swaylock-effects

A patch file from https://github.com/void-linux/void-packages/pull/26392.patch is attached