Blurry scheme on high DPI displays

[rusavv]

Canvas looks blurry on HDPI displays. Funny that code have a devicePixelRatio count that did not used.

[imakhrov]

@rusavv Did you figure it out how to solve the problem?

[NikitchenkoSergey]

Need change view dimensions in https://github.com/NikitchenkoSergey/scheme-designer/blob/master/src/helpers/View.ts by devicePixelRatio. Maybe, i do it in week.