added Character Setup (#511)

* added Character Setup

* whoops

* reverted unrelated changes

* Made everything work post-rebase

* Removed unused PreferencesChanged event

* nope, don't need this

* HumanoidProfileEditorPanel -> HumanoidProfileEditor

* Set initial data for hair pickers

* Fixed nullable warning

* Renamed LooksComponent -> HumanoidAppearanceComponent

* Renamed LooksComponentState -> HumanoidAppearanceComponentState

* Final renaming maybe

* Use a human-like dummy instead of a real human

* Change preferences structs back to classes

Content.Server/GameObjects/Components/Mobs/HumanoidAppearanceComponent.cs

@@ -0,0 +1,11 @@
+using Content.Shared.GameObjects.Components.Mobs;
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.GameObjects.Components.Mobs
+{
+    [RegisterComponent]
+    public sealed class HumanoidAppearanceComponent : SharedHumanoidAppearanceComponent
+    {
+
+    }
+}