feat(scenegraph): default interface creation

src/core/client.rs

@@ -1,4 +1,5 @@
 use super::scenegraph::Scenegraph;
+use crate::nodes::core::{Node, NodeRef};
 use libstardustxr::messenger::Messenger;
 use mio::net::UnixStream;
 use std::rc::{Rc, Weak};
@@ -11,7 +12,7 @@ pub struct Client<'a> {
 impl<'a> Client<'a> {
 	pub fn from_connection(connection: UnixStream) -> Self {
 		Client {
-			scenegraph: Scenegraph::new(),
+			scenegraph: Default::default(),
 			messenger: Rc::new(Messenger::new(connection)),
 		}
 	}