Add asset reload option via context menu in Editor

Source/Editor/Content/Items/AssetItem.cs

@@ -23,6 +23,11 @@ namespace FlaxEditor.Content
         /// </summary>
         public string TypeName { get; }
 
+        /// <summary>
+        /// Returns true if asset is now loaded.
+        /// </summary>
+        public bool IsLoaded => FlaxEngine.Content.GetAsset(ID)?.IsLoaded ?? false;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="AssetItem"/> class.
         /// </summary>
@@ -83,6 +88,18 @@ namespace FlaxEditor.Content
             }
         }
 
+        /// <summary>
+        /// Reloads the asset (if it's loaded).
+        /// </summary>
+        public void Reload()
+        {
+            var asset = FlaxEngine.Content.GetAsset(ID);
+            if (asset != null && asset.IsLoaded)
+            {
+                asset.Reload();
+            }
+        }
+
         /// <summary>
         /// Determines whether asset is of the specified type (included inheritance checks).
         /// </summary>