Add Spotless google-formatter

[timmycam]

Added spotless/google formattter, formatted distributed-processes module files

[oskardudycz]

@timmycam, thank you a lot for the contribution! It looks good to me, with one distinction: events definition. Do you know if it's possible to respect end lines? For events, I like to keep each field in seperate lines, as they're also forms of documentation, and I think keeping them in dedicated lines makes it more readable.

[timmycam]

Hey @oskardudycz , so been looking into respecting the new lines for events - and looks like there are a couple of options, but just to clarify you are talking about the record classes/code blocks specifically as to retain the format for documentation? The actual palantir and google formatters seem to be immuatble by design (for consistent styling), but I can add a step after them in the gradle format script to find records and reformat as they currently are. Or alternatively, more blunt ways could be to exclude the files by file name, or turn off the formatter for the records using comments that the formatter recognises. These are a bit more manual though.

Also seems like you are not alone with your thinking on this 😉 palantir/palantir-java-format#834