zio fork 1.8.2b-zio7: guardian rank tag, ranks on private messages

#rank/guardian shows as G, after the staff ranks so a staff rank wins. css_psay from a player
reads "(PM) [RANK] name: message" ("(PM) name: message" without a rank group); console's is
unchanged. New lang keys sa_psay_template and sa_psay_template_norank.

CS2-SimpleAdmin/Helper.cs

@@ -144,7 +144,8 @@ internal static class Helper
         return string.Join(" ", parts);
     }
 
-    // zio: staff rank groups, highest first, and their chat abbreviations.
+    // zio: rank groups, highest first, and their chat abbreviations. Guardian (VIP) is last, so a
+    // staff rank wins.
     private static readonly (string Group, string Tag)[] StaffRanks =
     [
         ("#rank/owner", "O"),
@@ -154,9 +155,10 @@ internal static class Helper
         ("#rank/mod", "M"),
         ("#rank/trialmod", "TM"),
         ("#rank/helper", "H"),
+        ("#rank/guardian", "G"),
     ];
 
-    // zio: the player's highest staff rank abbreviation, or null if they're in no rank group.
+    // zio: the player's highest rank abbreviation, or null if they're in no rank group.
     internal static string? GetStaffRankTag(CCSPlayerController player)
     {
         var groups = AdminManager.GetPlayerAdminData(new SteamID(player.SteamID))?.Groups;