Character body with running animation (#3)

* Add alien rig as child, what could go wrong

* Add running animation

src/alien.rs

@@ -21,6 +21,7 @@ fn setup(
 ) {
     // Build the animation graph
     let (graph, node_indices) = AnimationGraph::from_clips([
+        asset_server.load(GltfAssetLabel::Animation(2).from_asset(ALIEN_ASSET_PATH)),
         asset_server.load(GltfAssetLabel::Animation(1).from_asset(ALIEN_ASSET_PATH)),
         asset_server.load(GltfAssetLabel::Animation(0).from_asset(ALIEN_ASSET_PATH)),
     ]);