basic csv loader, transaction list & half done stats page

lib/pages/data/data_page.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:tunas/domains/account/account_bloc.dart';
+
+class DataPage extends StatelessWidget {
+  const DataPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return BlocBuilder<AccountBloc, AccountState>(
+      builder: (context, state) => Column(
+        children: [
+          FilledButton(
+            onPressed: () => context.read<AccountBloc>().add(const AccountImportCSV()),
+            child: const Text('Import CSV')
+          ),
+          FilledButton(
+            onPressed: () => context.read<AccountBloc>().add(const AccountImportJSON()),
+            child: const Text('Import JSON')
+          ),
+          FilledButton(
+            onPressed: () => context.read<AccountBloc>().add(const AccountExportCSV()),
+            child: const Text('Export CSV')
+          ),
+          FilledButton(
+            onPressed: () => context.read<AccountBloc>().add(const AccountExportJSON()),
+            child: const Text('Export JSON')
+          ),
+        ],
+      )
+    );
+  }
+}