Add complex DI benchmarks, main runner, and English README with summarized results for cherrypick core

benchmark_cherrypick/lib/scope_override_benchmark.dart

@@ -0,0 +1,43 @@
+import 'package:benchmark_harness/benchmark_harness.dart';
+import 'package:cherrypick/cherrypick.dart';
+
+class Shared {}
+class ParentImpl extends Shared {}
+class ChildImpl extends Shared {}
+
+class ParentModule extends Module {
+  @override
+  void builder(Scope currentScope) {
+    bind<Shared>().toProvide(() => ParentImpl()).singleton();
+  }
+}
+
+class ChildOverrideModule extends Module {
+  @override
+  void builder(Scope currentScope) {
+    bind<Shared>().toProvide(() => ChildImpl()).singleton();
+  }
+}
+
+class ScopeOverrideBenchmark extends BenchmarkBase {
+  ScopeOverrideBenchmark() : super('ScopeOverride (child overrides parent)');
+  late Scope parent;
+  late Scope child;
+  @override
+  void setup() {
+    parent = CherryPick.openRootScope();
+    parent.installModules([ParentModule()]);
+    child = parent.openSubScope('child');
+    child.installModules([ChildOverrideModule()]);
+  }
+  @override
+  void teardown() {
+    CherryPick.closeRootScope();
+  }
+  @override
+  void run() {
+    // Должен возвращать ChildImpl, а не ParentImpl
+    final resolved = child.resolve<Shared>();
+    assert(resolved is ChildImpl);
+  }
+}