Merge branch 'first_branch' of https://git.is.ulstu.ru/Extrimal/PIbd-21_Kurs_Work_Hotel into first_branch

Hotel/HotelDataModels/Models/IAdministratorModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IAdministratorModel : IId
+	{
+		string AdministratorFIO {  get; }
+		string AdministratorPhone { get; }
+		string HeadwaiterLogin { get; }
+		string HeadwaiterPassword { get; }
+	}
+}

Hotel/HotelDataModels/Models/IConferenceBookingModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IConferenceBookingModel : IId
+	{
+		int AdministratorId { get; }
+		int? ConferenceId { get; }
+		string PlaceСonference { get; }
+		DateTime? DateСonference { get; }
+		public Dictionary<int, IDinnerModel> ConferenceBookingDinners { get; }
+
+	}
+}

Hotel/HotelDataModels/Models/IDinnerModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IDinnerModel : IId
+	{
+		string DinnerName { get; }
+		int DinnerСalorieСontent { get; }
+		double DinnerPrice { get; }
+		int AdministratorId { get; }
+	}
+}

Hotel/HotelDataModels/Models/IRoomModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IRoomModel : IId
+	{
+		int RoomNumber { get; }
+		int CountBeds { get; }
+		double RoomPrice { get; }
+		int AdministratorId { get; }
+		public Dictionary<int, IDinnerModel> RoomDinners { get; }
+	}
+}