Created method for finding city by its name and country

SchengenVisaApi/ApplicationLayer/Locations/ICitiesRepository.cs

@@ -3,4 +3,12 @@ using Domains.LocationDomain;
 
 namespace ApplicationLayer.Locations;
 
-public interface ICitiesRepository : IGenericRepository<City> { }
+public interface ICitiesRepository : IGenericRepository<City>
+{
+    /// Find the city by its name and its country name
+    /// <param name="name">City's name</param>
+    /// <param name="countryName">City's country name</param>
+    /// <param name="cancellationToken">Cancellation token</param>
+    /// <returns>City with specific name and country</returns>
+    Task<City> GetByNameAsync(string name, string countryName, CancellationToken cancellationToken);
+}