initial commit

Hush.Providers/src/Interfaces/IAudioToTextProvider.cs

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+namespace Hush.Providers.Interfaces;
+
+/// <summary>
+/// Interface for audio-to-text transcription functionality.
+/// </summary>
+public interface IAudioToTextProvider
+{
+    /// <summary>
+    /// Transcribes audio from a stream to text.
+    /// </summary>
+    /// <param name="audioStream">The audio stream to transcribe</param>
+    /// <param name="modelName">The model name to use for transcription (e.g., whisper-large-v3)</param>
+    /// <param name="cancellationToken">Cancellation token</param>
+    /// <returns>The transcribed text</returns>
+    Task<string> TranscribeAsync(
+        Stream audioStream,
+        string modelName,
+        CancellationToken cancellationToken = default);
+}