Sla (#11)

Co-authored-by: gorbenko.pavel <gorbenko.pavel@tansu.kz>
Reviewed-on: http://git.tnsu.kz/gorbenko.pavel/tnsu-approval-route/pulls/11

backend/Tnsu.ApprovalRoute.Infrastructure/Persistence/DatabaseMigrationInitializer.cs

@@ -0,0 +1,10 @@
+using Extensions.Hosting.AsyncInitialization;
+using Microsoft.EntityFrameworkCore;
+
+namespace Tnsu.ApprovalRoute.Infrastructure.Persistence;
+
+public sealed class DatabaseMigrationInitializer(ApprovalRouteDbContext db) : IAsyncInitializer
+{
+    public Task InitializeAsync(CancellationToken cancellationToken) =>
+        db.Database.MigrateAsync(cancellationToken);
+}