Gamerule Entities, Take 2 (#15765)

Content.Server/GameTicking/Rules/Components/DeathMatchRuleComponent.cs

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+namespace Content.Server.GameTicking.Rules.Components;
+
+/// <summary>
+///     Simple GameRule that will do a free-for-all death match.
+///     Kill everybody else to win.
+/// </summary>
+[RegisterComponent, Access(typeof(DeathMatchRuleSystem))]
+public sealed class DeathMatchRuleComponent : Component
+{
+    /// <summary>
+    /// How long until the round restarts
+    /// </summary>
+    [DataField("restartDelay"), ViewVariables(VVAccess.ReadWrite)]
+    public float RestartDelay = 10f;
+
+    /// <summary>
+    /// How long after a person dies will the restart be checked
+    /// </summary>
+    [DataField("deadCheckDelay"), ViewVariables(VVAccess.ReadWrite)]
+    public float DeadCheckDelay = 5f;
+
+    /// <summary>
+    /// A timer for checking after a death
+    /// </summary>
+    [DataField("deadCheckTimer"), ViewVariables(VVAccess.ReadWrite)]
+    public float? DeadCheckTimer;
+
+    /// <summary>
+    /// A timer for the restart.
+    /// </summary>
+    [DataField("restartTimer"), ViewVariables(VVAccess.ReadWrite)]
+    public float? RestartTimer;
+}