feat: Introduce ITranscriptionOrchestrator and related interfaces, refactoring DaemonService and other components to use dependency injection.

Api/GroqApiClient.cs

@@ -5,10 +5,11 @@ using System.Text.Json.Serialization;
 using Toak.Api.Models;
 using Toak.Serialization;
 using Toak.Core;
+using Toak.Core.Interfaces;
 
 namespace Toak.Api;
 
-public class GroqApiClient
+public class GroqApiClient : ISpeechClient, ILlmClient
 {
     private readonly HttpClient _httpClient;