feat: Add async dependency resolution and enhance example

- Implemented async provider methods `toProvideAsync` and `toProvideAsyncWithParams` in `Binding` class, allowing asynchronous initialization with dynamic parameters.
- Added typedefs `AsyncProvider<T>` and `AsyncProviderWithParams<T>` for better type clarity with async operations.
- Introduced async resolution methods `resolveAsync` and `tryResolveAsync` in `Scope` for resolving asynchronous dependencies.
- Updated example in `main.dart` to demonstrate async dependency resolution capabilities.
  - Modified `FeatureModule` to utilize async providers for `DataRepository` and `DataBloc`.
  - Replaced synchronous resolution with `resolveAsync` where applicable.
  - Handled potential errors in dependency resolution with try-catch.
- Removed unnecessary whitespace for cleaner code formatting.

cherrypick/example/bin/main.dart

@@ -37,7 +37,8 @@ class FeatureModule extends Module {
   }
 }
 
-void main() async {
+Future<void> main() async {
+  try {
     final scope = openRootScope().installModules([
       AppModule(),
     ]);
@@ -52,13 +53,16 @@ void main() async {
         onError: (e) => print('Error: $e'), onDone: () => print('DONE'));
 
     await dataBloc.fetchData();
+  } catch (e) {
+    print('Error resolving dependency: $e');
+  }
 }
 
 class DataBloc {
   final DataRepository _dataRepository;
 
-  Stream<String> get data => _dataController.stream;
   final StreamController<String> _dataController = StreamController.broadcast();
+  Stream<String> get data => _dataController.stream;
 
   DataBloc(this._dataRepository);