Added functional project (created repo after getting it to a functional state)

NetworkDiagram/Models/DiagramModels.cs

@@ -0,0 +1,81 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace NetworkDiagram.Models
+{
+    public enum ConnectionType
+    {
+        Wire,
+        Wifi
+    }
+
+    public class DeviceTemplate
+    {
+        public string Name { get; set; } = string.Empty;
+        public string IconPath { get; set; } = string.Empty;
+    }
+
+    public class PlacedDevice : INotifyPropertyChanged
+    {
+        private string _name = string.Empty;
+        private List<string> _ipAddresses = new List<string>();
+        private string _annotation = string.Empty;
+        private double _x;
+        private double _y;
+
+        public string Name 
+        { 
+            get => _name; 
+            set { _name = value; OnPropertyChanged(); } 
+        }
+
+        public string IconPath { get; set; } = string.Empty;
+
+        public double X 
+        { 
+            get => _x; 
+            set { _x = value; OnPropertyChanged(); OnPropertyChanged(nameof(CenterX)); } 
+        }
+
+        public double Y 
+        { 
+            get => _y; 
+            set { _y = value; OnPropertyChanged(); OnPropertyChanged(nameof(CenterY)); } 
+        }
+
+        public List<string> IpAddresses 
+        { 
+            get => _ipAddresses; 
+            set { _ipAddresses = value; OnPropertyChanged(); } 
+        }
+
+        public string Annotation 
+        { 
+            get => _annotation; 
+            set { _annotation = value; OnPropertyChanged(); } 
+        }
+        
+        public double CenterX => X + 50; 
+        public double CenterY => Y + 40;
+
+        public event PropertyChangedEventHandler? PropertyChanged;
+        protected void OnPropertyChanged([CallerMemberName] string? name = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+        }
+    }
+
+    public class Connection
+    {
+        public PlacedDevice StartDevice { get; set; } = null!;
+        public PlacedDevice EndDevice { get; set; } = null!;
+        public ConnectionType Type { get; set; }
+    }
+
+    public class Diagram
+    {
+        public List<PlacedDevice> Devices { get; set; } = new List<PlacedDevice>();
+        public List<Connection> Connections { get; set; } = new List<Connection>();
+    }
+}