Add cvar to disable ooc chat (#3258)

Content.Client/Administration/ClientAdminManager.cs

@@ -21,6 +21,11 @@ namespace Content.Client.Administration
 
         public event Action? AdminStatusUpdated;
 
+        public bool IsActive()
+        {
+            return _adminData?.Active ?? false;
+        }
+
         public bool HasFlag(AdminFlags flag)
         {
             return _adminData?.HasFlag(flag) ?? false;

Content.Client/Administration/IClientAdminManager.cs

@@ -15,6 +15,12 @@ namespace Content.Client.Administration
         /// </summary>
         event Action AdminStatusUpdated;
 
+        /// <summary>
+        ///     Checks whether the local player is an admin.
+        /// </summary>
+        /// <returns>true if the local player is an admin, false otherwise even if they are deadminned.</returns>
+        bool IsActive();
+
         /// <summary>
         ///     Checks whether the local player has an admin flag.
         /// </summary>