Added authentication and authorization, updated dependency injections, removed hard-coded connection string

SchengenVisaApi/ApplicationLayer/AuthServices/NeededServices/IUsersRepository.cs

@@ -0,0 +1,15 @@
+using ApplicationLayer.GeneralNeededServices;
+using Domains.Users;
+
+namespace ApplicationLayer.AuthServices.NeededServices
+{
+    /// Repository pattern for <see cref="User"/>
+    public interface IUsersRepository : IGenericRepository<User>
+    {
+        /// Find <see cref="User"/> by email
+        /// <param name="email"><see cref="User"/>'s email</param>
+        /// <param name="cancellationToken">Cancellation token</param>
+        /// <returns>User or null if not found</returns>
+        Task<User?> FindByEmailAsync(string email, CancellationToken cancellationToken);
+    }
+}