Change Spotless format to be closer to the IntelliJ default

[xpmatteo-tw]

What is being fixed - and why?

The current format forced by the Spotless plugin is the Google format, that indents to 2 spaces. IntelliJ default is 4 spaces, which makes it awkward to work in the codebase.

I can also say that the Google format breaks lines too much, making them harder to read, at least the way I am used to read code.

I think we should avoid adding distractions to the interview by using an unusual format in the codebase.

What has changed?

I moved to the Palantir format, that mostly is the same as the one IntelliJ uses by default. The order of imports is different, but this should be a difficulty for the interviewer or the candidate.

[jejking-tw]

👍🏻 Thanks @xpmatteo-tw