Extended access system (#8469)

* Extended access system

Allows jobs to specify "extended" access levels, which will be granted if the round-start crew count is below a certain threshold.

* Extended accesses for jobs

* Spook

Content.Server/Station/StationConfig.Jobs.cs

@@ -25,4 +25,14 @@ public sealed partial class StationConfig
     ///   job name: [round-start, mid-round]
     /// </summary>
     public IReadOnlyDictionary<string, List<int?>> AvailableJobs => _availableJobs;
+
+    /// <summary>
+    /// If there are less than or equal this amount of players in the game at round start,
+    /// people get extended access levels from job prototypes.
+    /// </summary>
+    /// <remarks>
+    /// Set to -1 to disable extended access.
+    /// </remarks>
+    [DataField("extendedAccessThreshold")]
+    public int ExtendedAccessThreshold { get; set; } = 15;
 }