zio fork 1.8.2b-zio3: ban reasons on join, @css/bypassipban, spectators keep hidden

Banned players are let in long enough to be told the ban's reason and time left, then kicked
after KickTime, instead of only seeing "Your client is not allowed to join this server"; they
can't chat, talk or join a team meanwhile. New permission @css/bypassipban (players or groups,
implied by @css/root) skips IP and shared-IP bans, leaving only bans on their own SteamID, on
join and in the periodic check. Moving to spectators no longer unhides a hidden admin; only
joining T or CT does.

CS2-SimpleAdmin/Variables.cs

@@ -41,6 +41,8 @@ public partial class CS2_SimpleAdmin
 
     // Player Management
     internal static readonly HashSet<int> SilentPlayers = [];
+    // zio: banned players let in only to be told why, then kicked. They can't chat or join a team.
+    internal static readonly HashSet<int> PendingBanKicks = [];
     internal static readonly Dictionary<ulong, string> RenamedPlayers = [];
     internal static readonly ConcurrentDictionary<ulong, PlayerInfo> PlayersInfo = [];
     internal static readonly List<CCSPlayerController> CachedPlayers = [];