As proposed, I create the merge request with what I have right now and we can get it from here.
I am currently using a commit ID instead of a tag because I am not sure if there will be more changes in the rust-keylock-android repo.
fdroid readmeta: Success
fdroid lint org.astonbitecode.rustkeylock : Success
fdroid build -v -l org.astonbitecode.rustkeylock : Success