Nodes - Added enum equality node

Conditions - Implemented event trigger conditions

src/Artemis.VisualScripting/Nodes/CustomViewModels/EnumEqualsNodeCustomViewModel.cs

@@ -0,0 +1,65 @@
+using System;
+using System.ComponentModel;
+using Artemis.Core;
+using Artemis.Core.Events;
+using Artemis.UI.Shared;
+using Stylet;
+
+namespace Artemis.VisualScripting.Nodes.CustomViewModels
+{
+    public class EnumEqualsNodeCustomViewModel : CustomNodeViewModel
+    {
+        private readonly EnumEqualsNode _node;
+
+        public EnumEqualsNodeCustomViewModel(EnumEqualsNode node) : base(node)
+        {
+            _node = node;
+        }
+
+        public Enum Input
+        {
+            get => _node.Storage as Enum;
+            set => _node.Storage = value;
+        }
+
+        public BindableCollection<ValueDescription> EnumValues { get; } = new();
+
+        public override void OnActivate()
+        {
+            _node.InputPin.PinConnected += InputPinOnPinConnected;
+            _node.InputPin.PinDisconnected += InputPinOnPinDisconnected;
+            _node.PropertyChanged += NodeOnPropertyChanged;
+
+            if (_node.InputPin.Value != null && _node.InputPin.Value.GetType().IsEnum)
+                EnumValues.AddRange(EnumUtilities.GetAllValuesAndDescriptions(_node.InputPin.Value.GetType()));
+            base.OnActivate();
+        }
+
+        public override void OnDeactivate()
+        {
+            _node.InputPin.PinConnected -= InputPinOnPinConnected;
+            _node.InputPin.PinDisconnected -= InputPinOnPinDisconnected;
+            _node.PropertyChanged -= NodeOnPropertyChanged;
+
+            base.OnDeactivate();
+        }
+
+        private void InputPinOnPinDisconnected(object sender, SingleValueEventArgs<IPin> e)
+        {
+            EnumValues.Clear();
+        }
+
+        private void InputPinOnPinConnected(object sender, SingleValueEventArgs<IPin> e)
+        {
+            EnumValues.Clear();
+            if (_node.InputPin.Value != null && _node.InputPin.Value.GetType().IsEnum)
+                EnumValues.AddRange(EnumUtilities.GetAllValuesAndDescriptions(_node.InputPin.Value.GetType()));
+        }
+
+        private void NodeOnPropertyChanged(object? sender, PropertyChangedEventArgs e)
+        {
+            if (e.PropertyName == nameof(Node.Storage))
+                OnPropertyChanged(nameof(Input));
+        }
+    }
+}