README.md file should contain a section describing the debug inside the IntelliJ Idea using the gradle

[zcervink]

I suggest to add the following section to the README.md file so new users can learn how to debug using IntelliJ Idea IDE quickly and elegantly:

Quarkus debugging using IntelliJ Idea IDE

The debugging of the Quarkus Tools using IntelliJ Idea IDE is possible by following these steps:

1. import the Quarkus Tools plugin source code into the IntelliJ Idea
2. open the Gradle window in the IntelliJ Idea (View->Tool Windows->Gradle)
3. in the Gradle window search for the runIde task->context menu->Debug (path to the the runIde gradle task - intellij-quarkus->Tasks->intellij->runIde)