Add IDE support for IntelliJ IDEA

[dbaelz]

Due Gradle changes introduced with #3, the example can't be executed as JVM project in the IntelliJ IDEA (and other IDEs?).

TODO

• Example is executed IntelliJ IDEA as JVM project
• Tests are executed for the JVM target

[dbaelz]

@DrewCarlson You mentioned in #3 that you could take a look. I hope I do not get in your way/do duplicate work, but I'd like to take a look at this issue.

[DrewCarlson]

Nope, haven't looked into this one yet.

[dbaelz]

Current status: I've spent a few hours to solve it, but I couldn't get any further. There are some posts on stackoverflow and in the GitHub issues and I'm assume that it's not that easy to solve.

A working solution would be a separate module for the jvm, but I'm not comfortable doing it (yet).