Implemented the transcription API (#623)

app/MindWork AI Studio/Provider/IProvider.cs

@@ -50,6 +50,16 @@ public interface IProvider
     /// <returns>The image completion stream.</returns>
     public IAsyncEnumerable<ImageURL> StreamImageCompletion(Model imageModel, string promptPositive, string promptNegative = FilterOperator.String.Empty, ImageURL referenceImageURL = default, CancellationToken token = default);
     
+    /// <summary>
+    /// Transcribe an audio file.
+    /// </summary>
+    /// <param name="transcriptionModel">The model to use for transcription.</param>
+    /// <param name="audioFilePath">The audio file path.</param>
+    /// <param name="settingsManager">The settings manager instance to use.</param>
+    /// <param name="token">The cancellation token.</param>
+    /// <returns>>The transcription result.</returns>
+    public Task<string> TranscribeAudioAsync(Model transcriptionModel, string audioFilePath, SettingsManager settingsManager, CancellationToken token = default);
+    
     /// <summary>
     /// Load all possible text models that can be used with this provider.
     /// </summary>