Update 'src/app/core/application/objects.js'

Fixed sintax erro:
SyntaxError: .../src/app/core/application/objects.js: Missing semicolon. (1:15)
from: { stageManager as StageManager } from "./stage-manager";
to: import { stageManager as StageManager } from "./stage-manager";

src/app/core/application/objects.js

@@ -1,4 +1,7 @@
- { stageManager as StageManager } from "./stage-manager";
+// iGeomJS
+// LInE
+
+import { stageManager as StageManager } from "./stage-manager";
 
 class Objects {