feat(node): add basic spatial aspect

src/nodes/spatial.rs

@@ -0,0 +1,11 @@
+use super::core::Node;
+
+pub struct Spatial<'a> {
+	node: &'a Node<'a>,
+}
+
+impl<'a> Spatial<'a> {
+	pub fn new(node: &'a Node<'a>) -> Self {
+		Spatial { node }
+	}
+}