working customer post, get and delete

AB.Persistence/RepoDbContext.cs

@@ -0,0 +1,25 @@
+using AB.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AB.Persistence;
+
+public sealed class RepoDbContext : DbContext
+{
+
+    public RepoDbContext(DbContextOptions options)
+        : base (options)
+    {
+    }
+
+    public DbSet<Customer> Customers { get; set; }
+
+    public DbSet<Supplier> Suppliers { get; set; }
+
+    public DbSet<Product> Products { get; set; }
+
+}