Added ui labels for debugging and playability

UI/Label.cs

@@ -0,0 +1,21 @@
+using OpenTK.Mathematics;
+
+namespace Voxel.UI {
+    public class Label
+    {
+        public string Text;
+        public float X;
+        public float Y;
+        public float Size;
+        public Vector4 Color;
+
+        public Label(string text, float x, float y, float size, Vector4 color)
+        {
+            Text = text;
+            X = x;
+            Y = y;
+            Size = size;
+            Color = color;
+        }
+    }
+}