Grouped ghost roles and jump button (#7300)

Content.Server/Ghost/Roles/GhostRoleSystem.cs

@@ -10,6 +10,7 @@ using Content.Server.MobState.States;
 using Content.Server.Players;
 using Content.Shared.Administration;
 using Content.Shared.Database;
+using Content.Shared.Follower;
 using Content.Shared.GameTicking;
 using Content.Shared.Ghost;
 using Content.Shared.Ghost.Roles;
@@ -32,6 +33,7 @@ namespace Content.Server.Ghost.Roles
         [Dependency] private readonly EuiManager _euiManager = default!;
         [Dependency] private readonly IPlayerManager _playerManager = default!;
         [Dependency] private readonly AdminLogSystem _adminLogSystem = default!;
+        [Dependency] private readonly FollowerSystem _followerSystem = default!;
 
         private uint _nextRoleIdentifier;
         private bool _needsUpdateGhostRoleCount = true;
@@ -188,6 +190,14 @@ namespace Content.Server.Ghost.Roles
             CloseEui(player);
         }
 
+        public void Follow(IPlayerSession player, uint identifier)
+        {
+            if (!_ghostRoles.TryGetValue(identifier, out var role)) return;
+            if (player.AttachedEntity == null) return;
+
+            _followerSystem.StartFollowingEntity(player.AttachedEntity.Value, role.Owner);
+        }
+
         public void GhostRoleInternalCreateMindAndTransfer(IPlayerSession player, EntityUid roleUid, EntityUid mob, GhostRoleComponent? role = null)
         {
             if (!Resolve(roleUid, ref role)) return;