Change ExplorerFolder path and refactor

src/Config/ConfigManager.cs

@@ -123,7 +123,7 @@ namespace UnityExplorer.Config
 
             Default_Output_Path = new ConfigElement<string>("Default Output Path",
                 "The default output path when exporting things from UnityExplorer.",
-                Path.Combine(ExplorerCore.Loader.ExplorerFolder, "Output"));
+                Path.Combine(ExplorerCore.ExplorerFolder, "Output"));
 
             Startup_Delay_Time = new ConfigElement<float>("Startup Delay Time",
                 "The delay on startup before the UI is created.",

src/Config/InternalConfigHandler.cs

@@ -16,7 +16,7 @@ namespace UnityExplorer.Config
 
         public override void Init()
         {
-            CONFIG_PATH = Path.Combine(ExplorerCore.Loader.ExplorerFolder, "data.cfg");
+            CONFIG_PATH = Path.Combine(ExplorerCore.ExplorerFolder, "data.cfg");
         }
 
         public override void LoadConfig()