kotlin dsl: Initial conversion and root project naming

After converting from xml to kotlin, the root project package name is "_Self", and its Project object doesn't have a `name` or `id` like other projects.

package _Self

object Project : Project({
    description = "Contains all other projects"
    ...

Is there anything special about the name _Self. Should I be adding an `id` and `name` to the object?

Related, all the projects are flat in the package hierarchy, but nested in the Package objects. And other packages are at the same level as the projects, eg `pluginData`, `test` (which I added).

Is there any standard convention for the kotlin dsl project? This seems so very different than a standard java project.