Uniform Noise Adder using LoopBuilder

[gselzer]

This work is a quick cleanup of a stale branch adding a uniform noise Op, as well as a simple regression test. Some points on design decisions:

• Unlike the design implemented in Add uniform noise op imagej/imagej-ops#554, this Op runs on RandomAccessibleIntervals and makes use of the LoopBuilder construct. For simplicity, computation is performed sequentially - I didn't see a clear pathway to run this in a multithreaded way, because we'd have to (a) use a thread-safe RNG object, which would be slower, and I didn't bother figuring out whether it would be worth it, or (b) create a MersenneTwisterFast per chunk, which is tricky because as far as I can tell Chunks give you no discernible state that we could use to seed each MersenneTwisterFast differently.
• This Op takes no stance on overflow behavior - it's left up to the RealType how out-of-bounds values are handled. There are also situations where we may have lossy behavior - for example, if the range provided is very large - but I think that's a hard problem to solve anyways.

I honestly think this is a pretty low-priority solve - but at the very least, we've moved broken code from a stale branch to a PR that could be closed without losing anything important.