Added roles (may or may not be used)

dotnet/AipsCore/Infrastructure/Persistence/Db/DbInitializer.cs

@@ -0,0 +1,29 @@
+using AipsCore.Domain.Models.User.External;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace AipsCore.Infrastructure.Persistence.Db;
+
+public static class DbInitializer
+{
+    public static async Task SeedRolesAsync(IServiceProvider serviceProvider)
+    {
+        using var scope = serviceProvider.CreateScope();
+        var roleManager = scope.ServiceProvider.GetRequiredService<RoleManager<IdentityRole<Guid>>>();
+
+        var roleNames = UserRole.All();
+
+        foreach (var roleName in roleNames)
+        {
+            var roleExist = await roleManager.RoleExistsAsync(roleName.Name);
+            if (!roleExist)
+            {
+                await roleManager.CreateAsync(new IdentityRole<Guid>
+                {
+                    Name = roleName.Name,
+                    NormalizedName = roleName.Name.ToUpperInvariant()
+                });
+            }
+        }
+    }
+}