Added interface IFileManager

Author: YarikVor

ManagedCode.OpenAI/Files/Abstractions/IFileManager.cs

@@ -0,0 +1,14 @@
+namespace ManagedCode.OpenAI.Files.Abstractions;
+
+public interface IFileManager
+{
+    Task<IFileInfo[]> FileListAsync();
+    Task<IFileInfo> CreateFileAsync(string fileName, HttpContent content, string purpose = "fine-tune");
+    Task<IFileInfo> CreateFileAsync(string fileName, string content, string purpose = "fine-tune");
+    Task<IFileInfo> CreateFileAsync(string fileName, Stream content, string purpose = "fine-tune");
+    Task<bool> DeleteFileAsync(string fileId);
+    Task<bool> DeleteFileAsync(IFileInfo file);
+    Task<IFileInfo> FileInfoAsync(string fileId);
+    Task<string> FileContentAsync(IFileInfo info);
+    Task<string> FileContentAsync(string fileId);
+}