Layers - Seperated activation and removal of layers/effects

Effects - Added effects UI, order is still a bit messed up and reordering is missed
Effects - Added renaming of effects on the layer

src/Artemis.UI/Screens/Module/ProfileEditor/LayerProperties/LayerEffects/EffectsViewModel.cs

@@ -0,0 +1,50 @@
+using System.Linq;
+using Artemis.Core.Plugins.Abstract;
+using Artemis.Core.Plugins.LayerEffect;
+using Artemis.Core.Services.Interfaces;
+using Stylet;
+
+namespace Artemis.UI.Screens.Module.ProfileEditor.LayerProperties.LayerEffects
+{
+    public class EffectsViewModel : PropertyChangedBase
+    {
+        private readonly ILayerService _layerService;
+        private readonly IPluginService _pluginService;
+
+        public EffectsViewModel(LayerPropertiesViewModel layerPropertiesViewModel, IPluginService pluginService, ILayerService layerService)
+        {
+            _pluginService = pluginService;
+            _layerService = layerService;
+            LayerPropertiesViewModel = layerPropertiesViewModel;
+            LayerEffectDescriptors = new BindableCollection<LayerEffectDescriptor>();
+        }
+
+        public LayerPropertiesViewModel LayerPropertiesViewModel { get; }
+
+        public BindableCollection<LayerEffectDescriptor> LayerEffectDescriptors { get; set; }
+        public bool HasLayerEffectDescriptors => LayerEffectDescriptors.Any();
+
+        public LayerEffectDescriptor SelectedLayerEffectDescriptor
+        {
+            get => null;
+            set => AddLayerEffect(value);
+        }
+
+        public void PopulateDescriptors()
+        {
+            var layerBrushProviders = _pluginService.GetPluginsOfType<LayerEffectProvider>();
+
+            if (LayerEffectDescriptors.Any())
+                LayerEffectDescriptors.Clear();
+            LayerEffectDescriptors.AddRange(layerBrushProviders.SelectMany(l => l.LayerEffectDescriptors));
+
+            NotifyOfPropertyChange(nameof(HasLayerEffectDescriptors));
+        }
+
+        private void AddLayerEffect(LayerEffectDescriptor value)
+        {
+            if (LayerPropertiesViewModel.SelectedLayer != null && value != null)
+                _layerService.AddLayerEffect(LayerPropertiesViewModel.SelectedLayer, value);
+        }
+    }
+}