IDEA-180965: Add support for IntelliJ formatter

[fabriziocucci]

The line wrapping options that can be configured with IntelliJ seem to be a little bit more flexible than the one available in Eclipse (e.g. lambda-related preferences).

The closest thing I've found to format Java sources using an IntelliJ code style is its command line formatter. Although that still requires having the full binaries of IntelliJ (but I hope to be wrong!).

[nedtwigg]

Happy to merge a PR for this, but currently nobody is working on it.

You can use a custom step do this, there's an example of how to do this (and a description of its shortcomings) in #119.

[fabriziocucci]

Commented interesting issue on the IntelliJ issue tracker related to this enhancement:

https://youtrack.jetbrains.com/issue/IDEA-180965

[leonard84]

Also: Provide standalone formatter or API https://youtrack.jetbrains.com/issue/IDEABKL-7685