Added native FXB support

Drag+drop file into global content is now tasked.
Added FXB support in Glue.

Engines/FlatRedBallXNA/FlatRedBall/Content/ContentManager.cs

@@ -787,6 +787,11 @@ public T LoadFromFile<T>(string assetName)
 
 #endregion
 
+				else if(typeof(T) == typeof(Effect))
+				{
+					return base.Load<T>(assetName);
+				}
+
 #region else, exception!
 
                 else

FRBDK/Glue/Glue/Managers/DragDropManager.cs

@@ -1617,7 +1617,11 @@ public void HandleDropExternalFileOnTreeNode(FilePath[] droppedFiles, ITreeNode
                 }
                 else
                 {
-                    AddExistingFileManager.Self.AddSingleFile(fileName, ref userCancelled);
+                    TaskManager.Self.Add(() =>
+                    {
+                        AddExistingFileManager.Self.AddSingleFile(fileName, ref userCancelled);
+
+                    }, "Add file " + fileName);
                 }
             }
 

FRBDK/Glue/OfficialPlugins/EffectPlugin/MainEffectPlugin.cs

@@ -0,0 +1,40 @@
+using FlatRedBall.Glue.Plugins;
+using FlatRedBall.Glue.Plugins.ExportedImplementations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using OfficialPlugins.EffectPlugin.Managers;
+using System.ComponentModel.Composition;
+
+namespace OfficialPlugins.EffectPlugin
+{
+    [Export(typeof(PluginBase))]
+    public class MainEffectPlugin : PluginBase
+    {
+        public override string FriendlyName => "Effect Plugin"; 
+
+        public override void StartUp()
+        {
+            this.ReactToLoadedGlux += HandleLoadGlux;
+            this.ReactToUnloadedGlux += HandleUnloadGlux;
+        }
+
+        private void HandleLoadGlux()
+        {
+            var project = GlueState.Self.CurrentGlueProject;
+            var isFna = false;
+
+            if(isFna)
+            {
+                this.AddAssetTypeInfo(AssetTypeInfoManager.FxbEffectAssetTypeInfo);
+            }
+        }
+
+        private void HandleUnloadGlux()
+        {
+            this.UnregisterAssetTypeInfos();
+        }
+    }
+}

FRBDK/Glue/OfficialPlugins/EffectPlugin/Managers/AssetTypeInfoManager.cs

@@ -0,0 +1,35 @@
+using FlatRedBall.Glue.Elements;
+using FlatRedBall.IO;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OfficialPlugins.EffectPlugin.Managers
+{
+    public static class AssetTypeInfoManager
+    {
+        static AssetTypeInfo fxbEffectAssetTypeInfo;
+        public static AssetTypeInfo FxbEffectAssetTypeInfo =>
+            fxbEffectAssetTypeInfo = fxbEffectAssetTypeInfo ?? CreateFxbEffectAssetTypeInfo();
+
+        private static AssetTypeInfo CreateFxbEffectAssetTypeInfo()
+        {
+            var originalEffect = AvailableAssetTypes.Self.AllAssetTypes.FirstOrDefault(item => 
+                item.Extension == "fx" && 
+                item.QualifiedRuntimeTypeName.QualifiedType == "Microsoft.Xna.Framework.Graphics.Effect");
+
+            var fbxEffect = FileManager.CloneObject(originalEffect);
+
+            fbxEffect.FriendlyName = "Effect (.fxb)";
+            fbxEffect.Extension = "fxb";
+            fbxEffect.MustBeAddedToContentPipeline = false;
+            fbxEffect.CanBeAddedToContentPipeline = false;
+            fbxEffect.ContentImporter = null;
+            fbxEffect.ContentProcessor = null;
+
+            return fbxEffect;
+        }
+    }
+}