Add ghost role raffles (#26629)

* Add ghost role raffles

* GRR: Fix dialogue sizing, fix merge

* GRR: Add raffle deciders (winner picker)

* GRR: Make settings prototype based with option to override

* GRR: Use Raffles folder and namespace

* GRR: DataFieldify and TimeSpanify

* GRR: Don't actually DataFieldify HashSet<ICommonSession>s

* GRR: add GetGhostRoleCount() + docs

* update engine on branch

* Ghost role raffles: docs, fix window size, cleanup, etc

* GRR: Admin UI

* GRR: Admin UI: Display initial/max/ext of selected raffle settings proto

* GRR: Make a ton of roles raffled

Content.Server/Ghost/Roles/Raffles/GhostRoleRaffleConfig.cs

@@ -0,0 +1,35 @@
+using Content.Shared.Ghost.Roles.Raffles;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Ghost.Roles.Raffles;
+
+/// <summary>
+/// Raffle configuration.
+/// </summary>
+[DataDefinition]
+public sealed partial class GhostRoleRaffleConfig
+{
+    public GhostRoleRaffleConfig(GhostRoleRaffleSettings settings)
+    {
+        SettingsOverride = settings;
+    }
+
+    /// <summary>
+    /// Specifies the raffle settings to use.
+    /// </summary>
+    [DataField("settings", required: true)]
+    public ProtoId<GhostRoleRaffleSettingsPrototype> Settings { get; set; } = "default";
+
+    /// <summary>
+    /// If not null, the settings from <see cref="Settings"/> are ignored and these settings are used instead.
+    /// Intended for allowing admins to set custom raffle settings for admeme ghost roles.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadOnly)]
+    public GhostRoleRaffleSettings? SettingsOverride { get; set; }
+
+    /// <summary>
+    /// Sets which <see cref="IGhostRoleRaffleDecider"/> is used.
+    /// </summary>
+    [DataField("decider")]
+    public ProtoId<GhostRoleRaffleDeciderPrototype> Decider { get; set; } = "default";
+}