added IDynamicFileProvider

src/Volo.Abp.VirtualFileSystem/Volo/Abp/VirtualFileSystem/IDynamicFileManager.cs

@@ -0,0 +1,10 @@
+using Microsoft.Extensions.FileProviders;
+
+namespace Volo.Abp.VirtualFileSystem
+{
+    public interface IDynamicFileProvider : IFileProvider
+    {
+        void AddOrUpdate(IFileInfo fileInfo);
+        bool Delete(string filePath);
+    }
+}