diff: rename detector misbehaves with NodeJS chunks

[tstromberg]

See wolfi-dev/os#16881

I'm not sure what the right way to detect and track renames is for this case. I assume there is some JSON file we can read that provides a clue, but in the worst case, we look at content similarity.

bincapz/pkg/action/diff.go

Line 138 in 6bcc45f

// Walk over the added/removed paths and infer moves based on the

is where the modified code would need to be inserted.

[tstromberg]

possibly related: #92