add queue mechanism for builds and only allow one package built at a time for now.

frontend/lib/components/dashboard/your_packages.dart

@@ -156,6 +156,8 @@ IconData switchSuccessIcon(int status) {
       return Icons.check_circle_outline;
     case 2:
       return Icons.cancel_outlined;
+    case 3:
+      return Icons.pause_circle_outline;
     default:
       return Icons.question_mark_outlined;
   }
@@ -169,6 +171,8 @@ Color switchSuccessColor(int status) {
       return const Color(0xFF0A6900);
     case 2:
       return const Color(0xff760707);
+    case 3:
+      return const Color(0xFF0044AA);
     default:
       return const Color(0xFF9D8D00);
   }