working customer post, get and delete

AB.Domain/Repositories/ICustomerRepository.cs

@@ -1,12 +1,16 @@
-using System;
+using AB.Domain.Entities;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace AB.Domain.Repositories
+namespace AB.Domain.Repositories;
+
+public interface ICustomerRepository
 {
-    public class ICustomerRepository
-    {
-    }
+    public Task<IEnumerable<Customer>> GetAllAsync(CancellationToken cancellationToken);
+    Task<Customer> GetByIdAsync(Guid customerId, CancellationToken cancellationToken);
+    void Insert(Customer customer);
+    void Remove(Customer customer);
 }