Started implementing logic behind the timeline UI

src/Artemis.Core/Models/Profile/Keyframe.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace Artemis.Core.Models.Profile
+{
+    public class Keyframe
+    {
+        public Layer Layer { get; set; }
+        public LayerProperty Property { get; set; }
+
+        public TimeSpan Position { get; set; }
+        public object Value { get; set; }
+    }
+}

src/Artemis.Core/Models/Profile/LayerProperty.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+
+namespace Artemis.Core.Models.Profile
+{
+    public class LayerProperty
+    {
+        internal LayerProperty(Layer layer, LayerProperty parent)
+        {
+            Layer = layer;
+            Parent = parent;
+
+            Children = new List<LayerProperty>();
+        }
+
+        public Layer Layer { get; }
+        public LayerProperty Parent { get; }
+        public List<LayerProperty> Children { get; set; }
+
+        public string Name { get; set; }
+        public string Description { get; set; }
+        public Type Type { get; set; }
+        public object BaseValue { get; set; }
+        public List<Keyframe> Keyframes { get; set; }
+    }
+}