feat: Refactor code structure and optimize performance across multiple modules

mobile-apps/staff-app/lib/features/profile/bank_account/data/bank_account_api_provider.dart

@@ -0,0 +1,39 @@
+import 'package:injectable/injectable.dart';
+import 'package:krow/core/application/clients/api/api_client.dart';
+import 'package:krow/core/data/models/staff/bank_acc.dart';
+import 'package:krow/features/profile/bank_account/data/gql.dart';
+
+@injectable
+class BankAccountApiProvider {
+  final ApiClient _apiClient;
+
+  BankAccountApiProvider(this._apiClient);
+
+  Stream<BankAcc?> getStaffBankAcc() async* {
+    await for (var response
+        in _apiClient.queryWithCache(schema: staffBankAccount)) {
+      if (response == null || response.data == null) {
+        continue;
+      }
+      if (response.hasException) {
+        throw Exception(response.exception.toString());
+      }
+      final bankAcc =
+          BankAcc.fromJson(response.data?['me']?['bank_account'] ?? {});
+      yield bankAcc;
+    }
+  }
+
+  Future<void> putBunkAccount(BankAcc bankAcc) async {
+    final Map<String, dynamic> variables = {
+      'input': bankAcc.toJson(),
+    };
+
+    var result =
+        await _apiClient.mutate(schema: updateBankAccount, body: variables);
+
+    if (result.hasException) {
+      throw Exception(result.exception.toString());
+    }
+  }
+}

mobile-apps/staff-app/lib/features/profile/bank_account/data/bank_account_repository.dart

@@ -0,0 +1,7 @@
+import 'package:krow/core/data/models/staff/bank_acc.dart';
+
+abstract class BankAccountRepository {
+  Stream<BankAcc?> getStaffBankAcc();
+
+  Future<void> putBankAcc(BankAcc address);
+}

mobile-apps/staff-app/lib/features/profile/bank_account/data/gql.dart

@@ -0,0 +1,28 @@
+const String staffBankAccount = r'''
+query staffAddress {
+  me {
+  id
+      bank_account {
+       id
+       holder_name
+       bank_name
+       number
+       routing_number
+       country
+       state
+       city
+       street
+       building
+       zip
+    }
+  }
+}
+''';
+
+const String updateBankAccount = r'''
+mutation updateBankAccount($input: UpdateStaffBankAccountInput!) {
+  update_staff_bank_account(input: $input) {
+ 
+  }
+}
+''';