Add obsolete markers from 4.1

Libraries/SPTarkov.Server.Core/Servers/ConfigServer.cs

@@ -10,6 +10,7 @@ using LogLevel = SPTarkov.Server.Core.Models.Spt.Logging.LogLevel;
 namespace SPTarkov.Server.Core.Servers;
 
 [Injectable(InjectionType.Singleton)]
+[Obsolete("This class will be removed in SPT 4.2 in favor for directly injecting the configuration into classes")]
 public class ConfigServer
 {
     protected readonly FrozenSet<string> acceptableFileExtensions = ["json", "jsonc"];
@@ -30,6 +31,7 @@ public class ConfigServer
         }
     }
 
+    [Obsolete("This method will be removed in SPT 4.2 in favor for directly injecting the configuration into classes")]
     public T GetConfig<T>()
         where T : BaseConfig
     {