Add panic bunker UI and automatic panic bunker (#20954)

Content.Shared/CCVar/CCVars.cs

@@ -248,6 +248,26 @@ namespace Content.Shared.CCVar
         public static readonly CVarDef<bool> PanicBunkerEnabled =
             CVarDef.Create("game.panic_bunker.enabled", false, CVar.NOTIFY | CVar.REPLICATED);
 
+        /// <summary>
+        /// Whether or not the panic bunker will disable when an admin comes online.
+        /// </summary>
+        public static readonly CVarDef<bool> PanicBunkerDisableWithAdmins =
+            CVarDef.Create("game.panic_bunker.disable_with_admins", false, CVar.SERVERONLY);
+
+        /// <summary>
+        /// Whether or not the panic bunker will enable when no admins are online.
+        /// </summary>
+        public static readonly CVarDef<bool> PanicBunkerEnableWithoutAdmins =
+            CVarDef.Create("game.panic_bunker.enable_without_admins", false, CVar.SERVERONLY);
+
+        /// <summary>
+        /// Whether or not the panic bunker will count deadminned admins for
+        /// <see cref="PanicBunkerDisableWithAdmins"/> and
+        /// <see cref="PanicBunkerEnableWithoutAdmins"/>
+        /// </summary>
+        public static readonly CVarDef<bool> PanicBunkerCountDeadminnedAdmins =
+            CVarDef.Create("game.panic_bunker.count_deadminned_admins", false, CVar.SERVERONLY);
+
         /// <summary>
         /// Show reason of disconnect for user or not.
         /// </summary>