IntelliJ should assist in killing process upon port conflict

Hi!

Quite often when starting a process which will listen to port 8080, this port is already in use by another process, and the new process exits. It would be nice if IntelliJ offered some help in this common situation:

1. Kill the other process?

2. Update the application settings to use another port? In my case this would be updating `application.yml` since I run a lot of Spring Boot apps.

Sometimes there's a hanging process (for instance if IntelliJ crashed) and then number 1 above is very helpful since it might be hard for some users to find the hanging process and kill it.