Samples-plugin has a confusing folder structure under resources folder

Summary

All product versions of the samples plugin have a single folder named `com.adaptavist` which should be a `com` folder with a nested `adaptavist` folder.

scriptrunner-samples/<AppName>/src/main/resources/com.adaptavist

This does not break anything but it is causing confusion for customers because when referring to the scripts inside the `com.adaptavist` folder you end up with paths like.

/com.adaptavist/myScripts/myScript.groovy

which is a confusing mix of package style versus folder structure style.