Overhaul ilastik prediction, support bioimage.io, support ome.zarr v0.4

What's Changed

• Enable inference with bioimageio models by @constantinpape in #29
• Update ilastik prediction workflow by @constantinpape in #28
• Use ome-zarr v04 format and remove bdv.ome.zarr file format by @constantinpape in #31

Full Changelog: 0.3.7...0.4.0