Add Editorconfig file to the repo

[Gr33nbl00d]

There is a nice way to ensure consistent formatting between developers:

https://editorconfig.org/

You would simply need to export your current Code Format from IDEA (i assume you use it because of gitignore file) or your current IDE and add it to the repo. Would help a lot in maintaining same code style :)

[reinhapa]

I will look into this as soon I got some more time.