Camera package for Ebitengine

[setanarut]

I've released v2 of my camera package, if you want to add it to the World list you can take a look. https://github.com/setanarut/kamera

Run example on your local machine

go run github.com/setanarut/kamera/v2/examples/demo@latest

[sedyh]

Hello, thanks for PR. Looks great, added.