Add dependencies of type=zip to dependency-graph

[t-kulmburg]

We have quite a lot of internal dependencies in our projects where we have a zip file as artifact (using @zip as extension in the dependencies block in build.gradle).

Using this plugin, this dependencies are correctly included in the bom file with ?type=zip.

Also in dependency-track, they are correctly shown in the Components tab.

However, when using Show in dependency graph in dependency-track, the root of the graph is shown with Dependency could not be found in dependency graph displayed above.

I had a quick look through the generation of the graph in the code and found that here and here the dependencies and child dependencies are only added to the graph if the type is either jar or aar.

To get a more complete graph I would propose to also add dependencies of other types to the dependency-graph.