Collect all the module graphs in the plugin and query that from the directive

[2m]

Current implementation is not safe, as it runs sbt task outside of the graph.

From @dwijnand

@2m whats wrong with depending on?
I mean you depend on, just via the unsafe way
I think what you might want to do is collect all the module graphs in the whole build
you can do that with sbt's ScopeFilter and .all API
and then in `DependenciesDirective` look that moduleName
that would be safe
`paradoxDirectives` is a task key so that's good
yeah, that's how to do it

[dwijnand]

https://www.scala-sbt.org/1.x/docs/Tasks.html#Getting+values+from+multiple+scopes