Automated code formatting with scalafmt

[tovbinm]

Problem Currently we do not enforce much of the coding style, except some of the Scalastyle plugin checks (which are quite annoying).

Solution Replace Scalastyle with Scalafmt applied with Gradle plugin which would reformat our code based on the config at compile time.

A recommended approach would be to start by generating scalafmt.conf based of our current code style using scalaunfmt.

Alternatives Keep using Scalastyle?