Update to bevy 0.11

[ivakam]

This plugin looked pretty sweet so I updated it to 0.11. Currently all examples except pixelate are broken, but fixing them should be trivial for anyone who feels up for it. I've tested it a bit and it seem to work, but I can't make any promises.

[torsteingrindvik]

Thanks a lot! I'll have some time to run through the examples locally in a few days and if all good I'll merge.