Moves HumanoidAppearanceComponent to ECS (#4855)

* Moves HumanoidCharacterAppearance to ECS

* Makes HumanoidAppearanceSystem work over networks

* Makes HumanoidAppearanceSystem more efficient

* Cleans up the files

* Updates privacy on a couple of functions

* Fixes a few using references, renames a file

* Makes HumanoidAppearanceSystem more cleaner

* Fixes Magic Mirror

* Cleanup

* HumanoidAppearanceComponent now has a friend

SharedHumanoidAppearanceSystem is only allowed to act on this, now

* Fixes the Body-HumanoidAppearance ECS scaffolding

* a little cleanup never hurt anybody

* quick fix for magic mirror appearance access

* Replaces a networked event with a local one

This one was... causing bugs

Content.Client/Lobby/UI/LobbyCharacterPreviewPanel.cs

@@ -1,8 +1,8 @@
 using System.Linq;
-using Content.Client.CharacterAppearance;
 using Content.Client.HUD.UI;
 using Content.Client.Inventory;
 using Content.Client.Preferences;
+using Content.Shared.CharacterAppearance.Systems;
 using Content.Shared.GameTicking;
 using Content.Shared.Preferences;
 using Content.Shared.Roles;
@@ -130,9 +130,7 @@ namespace Content.Client.Lobby.UI
                 else
                 {
                     _summaryLabel.Text = selectedCharacter.Summary;
-                    var component = _previewDummy.GetComponent<HumanoidAppearanceComponent>();
-                    component.UpdateFromProfile(selectedCharacter);
-
+                    EntitySystem.Get<SharedHumanoidAppearanceSystem>().UpdateFromProfile(_previewDummy.Uid, selectedCharacter);
                     GiveDummyJobClothes(_previewDummy, selectedCharacter);
                 }
             }