Character eye customization, scroll bar in appearance tab character setup. Fixes #2946 (#3403)

* A lot of unfinished work, trying to figure stuff out but it ain't really working

* The eye colors finally work on the sprite!

* Big refactor for HumanoidProfileEditor, crashes upon making a lobby

* Fixed Lobby crashing

* Moves the eye selection box to a new tab, which fixes selection the box from going off-screen and not expanding the bars

* uncommented something I shouldn't have commented out

* Moved eye colors back to the appearance tab, still some ui glitches

* Made it possible to scroll in the appearance tab

* Added "Eye color:" label

* Migrating some deprecated functions into their replacements

* Merged two private sealed classes into one public class, removing duplication

Content.Shared/GameObjects/Components/SharedMagicMirrorComponent.cs

@@ -42,6 +42,17 @@ namespace Content.Shared.GameObjects.Components
             }
         }
 
+        [Serializable, NetSerializable]
+        public class EyeColorSelectedMessage : BoundUserInterfaceMessage
+        {
+            public (byte r, byte g, byte b) EyeColor;
+
+            public EyeColorSelectedMessage((byte r, byte g, byte b) color)
+            {
+                EyeColor = color;
+            }
+        }
+
         [Serializable, NetSerializable]
         public class MagicMirrorInitialDataMessage : BoundUserInterfaceMessage
         {
@@ -49,13 +60,15 @@ namespace Content.Shared.GameObjects.Components
             public readonly Color FacialHairColor;
             public readonly string HairName;
             public readonly string FacialHairName;
+            public readonly Color EyeColor;
 
-            public MagicMirrorInitialDataMessage(Color hairColor, Color facialHairColor, string hairName, string facialHairName)
+            public MagicMirrorInitialDataMessage(Color hairColor, Color facialHairColor, string hairName, string facialHairName, Color eyeColor)
             {
                 HairColor = hairColor;
                 FacialHairColor = facialHairColor;
                 HairName = hairName;
                 FacialHairName = facialHairName;
+                EyeColor = eyeColor;
             }
         }
     }