Lobby refactor + species loadouts support (#27576)

* Vox stuff

* Species loadouts and lobby refactor

The control flow for lobby is all over the shop so I pulled it all up from the individual controls so now they handle the bare minimum required and LobbyUIController handles the rest.

* a

* Bulk changes

* a

* weh

* Character import / export

* finalise

* woops this stuff too

* Also datafield exporting

* comments

* Review

Content.Client/Lobby/UI/Roles/TraitPreferenceSelector.xaml.cs

@@ -0,0 +1,36 @@
+using Content.Shared.Traits;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.Lobby.UI.Roles;
+
+[GenerateTypedNameReferences]
+public sealed partial class TraitPreferenceSelector : Control
+{
+    public bool Preference
+    {
+        get => Checkbox.Pressed;
+        set => Checkbox.Pressed = value;
+    }
+
+    public event Action<bool>? PreferenceChanged;
+
+    public TraitPreferenceSelector(TraitPrototype trait)
+    {
+        RobustXamlLoader.Load(this);
+        Checkbox.Text = Loc.GetString(trait.Name);
+        Checkbox.OnToggled += OnCheckBoxToggled;
+
+        if (trait.Description is { } desc)
+        {
+            Checkbox.ToolTip = Loc.GetString(desc);
+        }
+    }
+
+    private void OnCheckBoxToggled(BaseButton.ButtonToggledEventArgs args)
+    {
+        PreferenceChanged?.Invoke(Preference);
+    }
+}