feat: initial whipser transcriber implementation

src/StreamShorts.Library/Media/IVideoService.cs

@@ -0,0 +1,15 @@
+namespace StreamShorts.Library.Media;
+
+/// <summary>
+/// Represents a service for processing video files.
+/// </summary>
+internal interface IVideoService
+{
+  /// <summary>
+  /// Extracts audio from a video stream and writes it to an audio stream.
+  /// </summary>
+  /// <param name="video">The input video stream.</param>
+  /// <param name="audio">The output audio stream.</param>
+  /// <returns>A task that represents the asynchronous operation. The task result indicates whether the extraction was successful.</returns>
+  Task<bool> ExtractAudioFromVideoAsync(Stream video, Stream audio);
+}