fix: reformat code / code improvements

lib/utils/collection_utils.dart

@@ -0,0 +1,9 @@
+bool listEquals<T>(List<T>? a, List<T>? b) {
+  if (identical(a, b)) return true;
+  if (a == null || b == null) return a == b;
+  if (a.length != b.length) return false;
+  for (int i = 0; i < a.length; i++) {
+    if (a[i] != b[i]) return false;
+  }
+  return true;
+}