Added skin support and simplified APIs to override bone position.

editor/import/editor_import_collada.cpp

@@ -176,7 +176,6 @@ Error ColladaImport::_create_scene_skeletons(Collada::Node *p_node) {
 
 		Skeleton *sk = memnew(Skeleton);
 		int bone = 0;
-		sk->set_use_bones_in_world_transform(true); // This improves compatibility in Collada
 		for (int i = 0; i < p_node->children.size(); i++) {
 
 			_populate_skeleton(sk, p_node->children[i], bone, -1);

editor/import/editor_scene_importer_gltf.cpp

@@ -2133,7 +2133,7 @@ Spatial *EditorSceneImporterGLTF::_generate_scene(GLTFState &state, int p_bake_f
 	Vector<Skeleton *> skeletons;
 	for (int i = 0; i < state.skins.size(); i++) {
 		Skeleton *s = memnew(Skeleton);
-		s->set_use_bones_in_world_transform(false); //GLTF does not need this since meshes are always local
+
 		String name = state.skins[i].name;
 		if (name == "") {
 			name = _gen_unique_name(state, "Skeleton");