pass shared NameComponentManager to gltfio AssetLoader

thermion_dart/test/entity_tests.dart

@@ -0,0 +1,25 @@
+@Timeout(const Duration(seconds: 600))
+import 'dart:io';
+
+import 'package:test/test.dart';
+import 'package:thermion_dart/thermion_dart.dart';
+import 'helpers.dart';
+
+void main() async {
+  var testHelper = TestHelper("entity_tests");
+  await testHelper.setup();
+
+  test('get entity names', () async {
+    var asset = await FilamentApp.instance!.loadGltfFromBuffer(
+        File("${testHelper.testDir}/assets/cube.glb").readAsBytesSync(),
+        nullptr);
+
+    expect(null, await FilamentApp.instance!.getNameForEntity(asset.entity));
+    var children = await asset.getChildEntities();
+    var child = children.first;
+
+    expect("Cube", await FilamentApp.instance!.getNameForEntity(child));
+    var childNames = await asset.getChildEntityNames();
+    expect("Cube", childNames.first);
+  });
+}