feat: sales analytic

lib/domain/analytic/repositories/i_analytic_repository.dart

@@ -0,0 +1,10 @@
+import 'package:dartz/dartz.dart';
+
+import '../analytic.dart';
+
+abstract class IAnalyticRepository {
+  Future<Either<AnalyticFailure, SalesAnalytic>> getSales({
+    required DateTime dateFrom,
+    required DateTime dateTo,
+  });
+}