Various improvements to job greetings. (#4777)

Content.Shared/Roles/JobPrototype.cs

@@ -18,12 +18,21 @@ namespace Content.Shared.Roles
         [DataField("id", required: true)]
         public string ID { get; } = default!;
 
+        [DataField("supervisors")]
+        public string Supervisors { get; } = "nobody";
+
         /// <summary>
         ///     The name of this job as displayed to players.
         /// </summary>
         [DataField("name")]
         public string Name { get; } = string.Empty;
 
+        [DataField("joinNotifyCrew")]
+        public bool JoinNotifyCrew { get; } = false;
+
+        [DataField("requireAdminNotify")]
+        public bool RequireAdminNotify { get; } = false;
+
         /// <summary>
         ///     Whether this job is a head.
         ///     The job system will try to pick heads before other jobs on the same priority level.