use modular initing system rather than calling Init() method.

StgSharp.Common/Environment/GlobalSetting.cs

@@ -44,7 +44,6 @@ namespace StgSharp
         private static byte[] _currentHash = [];
 
         private static bool _inited;
-        private static int _mainThreadID = -1;
 
         public static byte[] CurrentAssemblyHash
         {
@@ -73,6 +72,8 @@ namespace StgSharp
             internal set => _mainThreadID = value;
         }
 
+        private static int _mainThreadID { get; set; } = -1;
+
         /// <summary>
         ///   CustomizeInit an instance of OpenGL program, This method should be called before any
         ///   other World api.